/* * Copyright (C) 2020-2021 Jo-Philipp Wich * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "ucode/lexer.h" #include "ucode/compiler.h" #include "ucode/vm.h" #include "ucode/lib.h" #include "ucode/source.h" static void format_context_line(uc_stringbuf_t *buf, const char *line, size_t off, bool compact) { unsigned padlen, i; const char *p; for (p = line, padlen = 0; *p != '\n' && *p != '\0'; p++) { if (compact && (p - line) == (ptrdiff_t)off) ucv_stringbuf_append(buf, "\033[22m"); switch (*p) { case '\t': ucv_stringbuf_append(buf, " "); if (p < line + off) padlen += 4; break; case '\r': case '\v': ucv_stringbuf_append(buf, " "); if (p < line + off) padlen++; break; default: ucv_stringbuf_addstr(buf, p, 1); if (p < line + off) padlen++; } } if (compact) { ucv_stringbuf_append(buf, "\033[m\n"); return; } ucv_stringbuf_append(buf, "`\n "); if (padlen < strlen("Near here ^")) { for (i = 0; i < padlen; i++) ucv_stringbuf_append(buf, " "); ucv_stringbuf_append(buf, "^-- Near here\n"); } else { ucv_stringbuf_append(buf, "Near here "); for (i = strlen("Near here "); i < padlen; i++) ucv_stringbuf_append(buf, "-"); ucv_stringbuf_append(buf, "^\n"); } } static char * source_filename(uc_source_t *src, uint32_t line) { const char *name = src->filename ? basename(src->filename) : "[?]"; static char buf[sizeof("xxxxxxxxx.uc:0000000000")]; size_t len = strlen(name); if (len > 12) snprintf(buf, sizeof(buf), "...%s:%u", name + (len - 9), line); else snprintf(buf, sizeof(buf), "%12s:%u", name, line); return buf; } bool uc_source_context_format(uc_stringbuf_t *buf, uc_source_t *src, size_t off, bool compact) { size_t len, rlen; bool truncated; char line[256]; long srcpos; int eline; srcpos = ftell(src->fp); if (srcpos == -1) return false; fseek(src->fp, 0, SEEK_SET); truncated = false; eline = 1; rlen = 0; while (fgets(line, sizeof(line), src->fp)) { len = strlen(line); rlen += len; if (rlen >= off) { if (compact) ucv_stringbuf_printf(buf, "\033[2;40;97m%17s %s", source_filename(src, eline), truncated ? "..." : ""); else ucv_stringbuf_printf(buf, "\n `%s", truncated ? "..." : ""); format_context_line(buf, line, len - (rlen - off) + (truncated ? 3 : 0), compact); break; } truncated = (len > 0 && line[len-1] != '\n'); eline += !truncated; } fseek(src->fp, srcpos, SEEK_SET); return true; } bool uc_error_context_format(uc_stringbuf_t *buf, uc_source_t *src, uc_value_t *stacktrace, size_t off) { uc_value_t *e, *fn, *file, *line, *byte; const char *path; size_t idx; for (idx = 0; idx < (stacktrace ? ucv_array_length(stacktrace) : 0); idx++) { e = ucv_array_get(stacktrace, idx); fn = ucv_object_get(e, "function", NULL); file = ucv_object_get(e, "filename", NULL); if (idx == 0) { path = (file && strcmp(ucv_string_get(file), "[stdin]")) ? ucv_string_get(file) : NULL; if (path && fn) ucv_stringbuf_printf(buf, "In %s(), file %s, ", ucv_string_get(fn), path); else if (fn) ucv_stringbuf_printf(buf, "In %s(), ", ucv_string_get(fn)); else if (path) ucv_stringbuf_printf(buf, "In %s, ", path); else ucv_stringbuf_append(buf, "In "); ucv_stringbuf_printf(buf, "line %" PRId64 ", byte %" PRId64 ":\n", ucv_int64_get(ucv_object_get(e, "line", NULL)), ucv_int64_get(ucv_object_get(e, "byte", NULL))); } else { line = ucv_object_get(e, "line", NULL); byte = ucv_object_get(e, "byte", NULL); ucv_stringbuf_printf(buf, " called from %s%s (%s", fn ? "function " : "anonymous function", fn ? ucv_string_get(fn) : "", file ? ucv_string_get(file) : ""); if (line && byte) ucv_stringbuf_printf(buf, ":%" PRId64 ":%" PRId64 ")\n", ucv_int64_get(line), ucv_int64_get(byte)); else ucv_stringbuf_append(buf, "[C])\n"); } } return uc_source_context_format(buf, src, off, false); } static char *uc_cast_string(uc_vm_t *vm, uc_value_t **v, bool *freeable) { if (ucv_type(*v) == UC_STRING) { *freeable = false; return _ucv_string_get(v); } *freeable = true; return ucv_to_string(vm, *v); } static double uc_cast_double(uc_value_t *v) { uc_type_t t; int64_t n; double d; t = ucv_cast_number(v, &n, &d); errno = 0; if (t == UC_DOUBLE) { if (isnan(d)) errno = EINVAL; else if (!isfinite(d)) errno = EOVERFLOW; return d; } return (double)n; } static int64_t uc_cast_int64(uc_value_t *v) { uc_type_t t; int64_t n; double d; t = ucv_cast_number(v, &n, &d); errno = 0; if (t == UC_DOUBLE) { if (isnan(d)) errno = EINVAL; else if (!isfinite(d)) errno = EOVERFLOW; else if ((double)(int64_t)d != d) errno = ERANGE; return (int64_t)d; } return n; } static void uc_vm_ctx_push(uc_vm_t *vm) { uc_value_t *ctx = NULL; if (vm->callframes.count >= 2) ctx = vm->callframes.entries[vm->callframes.count - 2].ctx; uc_vm_stack_push(vm, ucv_get(ctx)); } static uc_value_t * uc_print_common(uc_vm_t *vm, size_t nargs, FILE *fh) { uc_value_t *item; size_t reslen = 0; size_t len = 0; size_t arridx; char *p; for (arridx = 0; arridx < nargs; arridx++) { item = uc_fn_arg(arridx); if (ucv_type(item) == UC_STRING) { len = ucv_string_length(item); reslen += fwrite(ucv_string_get(item), 1, len, fh); } else if (item != NULL) { p = ucv_to_string(vm, item); len = strlen(p); reslen += fwrite(p, 1, len, fh); free(p); } } return ucv_int64_new(reslen); } static uc_value_t * uc_print(uc_vm_t *vm, size_t nargs) { return uc_print_common(vm, nargs, vm->output); } static uc_value_t * uc_length(uc_vm_t *vm, size_t nargs) { uc_value_t *arg = uc_fn_arg(0); switch (ucv_type(arg)) { case UC_OBJECT: return ucv_int64_new(ucv_object_length(arg)); case UC_ARRAY: return ucv_int64_new(ucv_array_length(arg)); case UC_STRING: return ucv_int64_new(ucv_string_length(arg)); default: return NULL; } } static uc_value_t * uc_index(uc_vm_t *vm, size_t nargs, bool right) { uc_value_t *stack = uc_fn_arg(0); uc_value_t *needle = uc_fn_arg(1); const char *sstr, *nstr, *p; size_t arridx, len; ssize_t ret = -1; switch (ucv_type(stack)) { case UC_ARRAY: for (arridx = 0, len = ucv_array_length(stack); arridx < len; arridx++) { if (ucv_compare(I_EQ, ucv_array_get(stack, arridx), needle)) { ret = (ssize_t)arridx; if (!right) break; } } return ucv_int64_new(ret); case UC_STRING: sstr = ucv_string_get(stack); nstr = needle ? ucv_string_get(needle) : NULL; len = needle ? strlen(nstr) : 0; for (p = sstr; *p && len; p++) { if (!strncmp(p, nstr, len)) { ret = (ssize_t)(p - sstr); if (!right) break; } } return ucv_int64_new(ret); default: return NULL; } } static uc_value_t * uc_lindex(uc_vm_t *vm, size_t nargs) { return uc_index(vm, nargs, false); } static uc_value_t * uc_rindex(uc_vm_t *vm, size_t nargs) { return uc_index(vm, nargs, true); } static uc_value_t * uc_push(uc_vm_t *vm, size_t nargs) { uc_value_t *arr = uc_fn_arg(0); uc_value_t *item = NULL; size_t arridx; if (ucv_type(arr) != UC_ARRAY) return NULL; for (arridx = 1; arridx < nargs; arridx++) { item = uc_fn_arg(arridx); ucv_array_push(arr, ucv_get(item)); } return ucv_get(item); } static uc_value_t * uc_pop(uc_vm_t *vm, size_t nargs) { uc_value_t *arr = uc_fn_arg(0); return ucv_array_pop(arr); } static uc_value_t * uc_shift(uc_vm_t *vm, size_t nargs) { uc_value_t *arr = uc_fn_arg(0); return ucv_array_shift(arr); } static uc_value_t * uc_unshift(uc_vm_t *vm, size_t nargs) { uc_value_t *arr = uc_fn_arg(0); uc_value_t *item = NULL; size_t i; if (ucv_type(arr) != UC_ARRAY) return NULL; for (i = 1; i < nargs; i++) { item = uc_fn_arg(i); ucv_array_unshift(arr, ucv_get(item)); } return ucv_get(item); } static uc_value_t * uc_chr(uc_vm_t *vm, size_t nargs) { uc_value_t *rv = NULL; size_t idx; int64_t n; char *str; if (!nargs) return ucv_string_new_length("", 0); str = xalloc(nargs); for (idx = 0; idx < nargs; idx++) { n = uc_cast_int64(uc_fn_arg(idx)); if (n < 0) n = 0; else if (n > 255) n = 255; str[idx] = (char)n; } rv = ucv_string_new_length(str, nargs); free(str); return rv; } static uc_value_t * uc_die(uc_vm_t *vm, size_t nargs) { uc_value_t *msg = uc_fn_arg(0); bool freeable = false; char *s; s = msg ? uc_cast_string(vm, &msg, &freeable) : "Died"; uc_vm_raise_exception(vm, EXCEPTION_USER, "%s", s); if (freeable) free(s); return NULL; } static uc_value_t * uc_exists(uc_vm_t *vm, size_t nargs) { uc_value_t *obj = uc_fn_arg(0); uc_value_t *key = uc_fn_arg(1); bool found, freeable; char *k; if (ucv_type(obj) != UC_OBJECT) return false; k = uc_cast_string(vm, &key, &freeable); ucv_object_get(obj, k, &found); if (freeable) free(k); return ucv_boolean_new(found); } static uc_value_t * uc_exit(uc_vm_t *vm, size_t nargs) { int64_t n = uc_cast_int64(uc_fn_arg(0)); vm->arg.s32 = (int32_t)n; uc_vm_raise_exception(vm, EXCEPTION_EXIT, "Terminated"); return NULL; } static uc_value_t * uc_getenv(uc_vm_t *vm, size_t nargs) { uc_value_t *key = uc_fn_arg(0); char *k = ucv_string_get(key); char *val = k ? getenv(k) : NULL; return val ? ucv_string_new(val) : NULL; } static uc_value_t * uc_filter(uc_vm_t *vm, size_t nargs) { uc_value_t *obj = uc_fn_arg(0); uc_value_t *func = uc_fn_arg(1); uc_value_t *rv, *arr; size_t arridx, arrlen; if (ucv_type(obj) != UC_ARRAY) return NULL; arr = ucv_array_new(vm); for (arrlen = ucv_array_length(obj), arridx = 0; arridx < arrlen; arridx++) { uc_vm_ctx_push(vm); uc_vm_stack_push(vm, ucv_get(func)); uc_vm_stack_push(vm, ucv_get(ucv_array_get(obj, arridx))); uc_vm_stack_push(vm, ucv_int64_new(arridx)); uc_vm_stack_push(vm, ucv_get(obj)); if (uc_vm_call(vm, true, 3)) { ucv_put(arr); return NULL; } rv = uc_vm_stack_pop(vm); if (ucv_is_truish(rv)) ucv_array_push(arr, ucv_get(ucv_array_get(obj, arridx))); ucv_put(rv); } return arr; } static uc_value_t * uc_hex(uc_vm_t *vm, size_t nargs) { uc_value_t *val = uc_fn_arg(0); char *e, *v; int64_t n; v = ucv_string_get(val); if (!v || !isxdigit(*v)) return ucv_double_new(NAN); n = strtoll(v, &e, 16); if (e == v || *e) return ucv_double_new(NAN); return ucv_int64_new(n); } static uc_value_t * uc_int(uc_vm_t *vm, size_t nargs) { int64_t n = uc_cast_int64(uc_fn_arg(0)); if (errno == EINVAL || errno == EOVERFLOW) return ucv_double_new(NAN); return ucv_int64_new(n); } static uc_value_t * uc_join(uc_vm_t *vm, size_t nargs) { uc_value_t *sep = uc_fn_arg(0); uc_value_t *arr = uc_fn_arg(1); size_t arrlen, arridx; uc_stringbuf_t *buf; if (ucv_type(arr) != UC_ARRAY) return NULL; buf = ucv_stringbuf_new(); for (arrlen = ucv_array_length(arr), arridx = 0; arridx < arrlen; arridx++) { if (arridx > 0) ucv_to_stringbuf(vm, buf, sep, false); ucv_to_stringbuf(vm, buf, ucv_array_get(arr, arridx), false); } return ucv_stringbuf_finish(buf); } static uc_value_t * uc_keys(uc_vm_t *vm, size_t nargs) { uc_value_t *obj = uc_fn_arg(0); uc_value_t *arr = NULL; if (ucv_type(obj) != UC_OBJECT) return NULL; arr = ucv_array_new(vm); ucv_object_foreach(obj, key, val) { (void)val; ucv_array_push(arr, ucv_string_new(key)); } return arr; } static uc_value_t * uc_lc(uc_vm_t *vm, size_t nargs) { char *str = ucv_to_string(vm, uc_fn_arg(0)); uc_value_t *rv = NULL; char *p; if (!str) return NULL; for (p = str; *p; p++) if (*p >= 'A' && *p <= 'Z') *p |= 32; rv = ucv_string_new(str); free(str); return rv; } static uc_value_t * uc_map(uc_vm_t *vm, size_t nargs) { uc_value_t *obj = uc_fn_arg(0); uc_value_t *func = uc_fn_arg(1); uc_value_t *arr, *rv; size_t arridx, arrlen; if (ucv_type(obj) != UC_ARRAY) return NULL; arr = ucv_array_new(vm); for (arrlen = ucv_array_length(obj), arridx = 0; arridx < arrlen; arridx++) { uc_vm_ctx_push(vm); uc_vm_stack_push(vm, ucv_get(func)); uc_vm_stack_push(vm, ucv_get(ucv_array_get(obj, arridx))); uc_vm_stack_push(vm, ucv_int64_new(arridx)); uc_vm_stack_push(vm, ucv_get(obj)); if (uc_vm_call(vm, true, 3)) { ucv_put(arr); return NULL; } rv = uc_vm_stack_pop(vm); ucv_array_push(arr, rv); } return arr; } static uc_value_t * uc_ord(uc_vm_t *vm, size_t nargs) { uc_value_t *obj = uc_fn_arg(0); uc_value_t *rv, *pos; const char *str; size_t i, len; int64_t n; if (ucv_type(obj) != UC_STRING) return NULL; str = ucv_string_get(obj); len = ucv_string_length(obj); if (nargs == 1) return str[0] ? ucv_int64_new((int64_t)str[0]) : NULL; rv = ucv_array_new(vm); for (i = 1; i < nargs; i++) { pos = uc_fn_arg(i); if (ucv_type(pos) == UC_INTEGER) { n = ucv_int64_get(pos); if (n < 0) n += len; if (n >= 0 && (uint64_t)n < len) { ucv_array_push(rv, ucv_int64_new((int64_t)str[n])); continue; } } ucv_array_push(rv, NULL); } return rv; } static uc_value_t * uc_type(uc_vm_t *vm, size_t nargs) { uc_value_t *v = uc_fn_arg(0); uc_type_t t = ucv_type(v); switch (t) { case UC_CFUNCTION: case UC_FUNCTION: case UC_CLOSURE: return ucv_string_new("function"); case UC_INTEGER: return ucv_string_new("int"); case UC_BOOLEAN: return ucv_string_new("bool"); case UC_NULL: return NULL; default: return ucv_string_new(ucv_typename(v)); } } static uc_value_t * uc_reverse(uc_vm_t *vm, size_t nargs) { uc_value_t *obj = uc_fn_arg(0); uc_value_t *rv = NULL; size_t len, arridx; const char *str; char *dup, *p; if (ucv_type(obj) == UC_ARRAY) { rv = ucv_array_new(vm); for (arridx = ucv_array_length(obj); arridx > 0; arridx--) ucv_array_push(rv, ucv_get(ucv_array_get(obj, arridx - 1))); } else if (ucv_type(obj) == UC_STRING) { len = ucv_string_length(obj); str = ucv_string_get(obj); p = dup = xalloc(len + 1); while (len > 0) *p++ = str[--len]; rv = ucv_string_new(dup); free(dup); } return rv; } static struct { uc_vm_t *vm; bool ex; uc_value_t *fn; } sort_ctx; static int default_cmp(uc_value_t *v1, uc_value_t *v2) { uc_type_t t1, t2; int64_t n1, n2; double d1, d2; char *s1, *s2; bool f1, f2; if (ucv_type(v1) == UC_INTEGER || ucv_type(v1) == UC_DOUBLE || ucv_type(v2) == UC_INTEGER || ucv_type(v2) == UC_DOUBLE) { t1 = ucv_cast_number(v1, &n1, &d1); t2 = ucv_cast_number(v2, &n2, &d2); if (t1 == UC_DOUBLE || t2 == UC_DOUBLE) { d1 = (t1 == UC_DOUBLE) ? d1 : (double)n1; d2 = (t2 == UC_DOUBLE) ? d2 : (double)n2; if (d1 < d2) return -1; if (d1 > d2) return 1; return 0; } if (n1 < n2) return -1; if (n1 > n2) return 1; return 0; } s1 = uc_cast_string(sort_ctx.vm, &v1, &f1); s2 = uc_cast_string(sort_ctx.vm, &v2, &f2); n1 = strcmp(s1, s2); if (f1) free(s1); if (f2) free(s2); return n1; } static int sort_fn(const void *k1, const void *k2) { uc_value_t * const *v1 = k1; uc_value_t * const *v2 = k2; uc_value_t *rv; uc_type_t t; int64_t n; double d; if (!sort_ctx.fn) return default_cmp(*v1, *v2); if (sort_ctx.ex) return 0; uc_vm_ctx_push(sort_ctx.vm); uc_vm_stack_push(sort_ctx.vm, ucv_get(sort_ctx.fn)); uc_vm_stack_push(sort_ctx.vm, ucv_get(*v1)); uc_vm_stack_push(sort_ctx.vm, ucv_get(*v2)); if (uc_vm_call(sort_ctx.vm, true, 2)) { sort_ctx.ex = true; return 0; } rv = uc_vm_stack_pop(sort_ctx.vm); t = ucv_cast_number(rv, &n, &d); if (t == UC_DOUBLE) { if (d < 0) n = -1; if (d > 0) n = 1; } else { if (n < 0) n = -1; if (n > 0) n = 1; } ucv_put(rv); return n; } static uc_value_t * uc_sort(uc_vm_t *vm, size_t nargs) { uc_value_t *arr = uc_fn_arg(0); uc_value_t *fn = uc_fn_arg(1); if (ucv_type(arr) != UC_ARRAY) return NULL; sort_ctx.vm = vm; sort_ctx.fn = fn; ucv_array_sort(arr, sort_fn); return sort_ctx.ex ? NULL : ucv_get(arr); } static uc_value_t * uc_splice(uc_vm_t *vm, size_t nargs) { uc_value_t *arr = uc_fn_arg(0); int64_t ofs = uc_cast_int64(uc_fn_arg(1)); int64_t remlen = uc_cast_int64(uc_fn_arg(2)); size_t arrlen, addlen, idx; if (ucv_type(arr) != UC_ARRAY) return NULL; arrlen = ucv_array_length(arr); addlen = nargs; if (addlen == 1) { ofs = 0; addlen = 0; remlen = arrlen; } else if (addlen == 2) { if (ofs < 0) { ofs = arrlen + ofs; if (ofs < 0) ofs = 0; } else if ((uint64_t)ofs > arrlen) { ofs = arrlen; } addlen = 0; remlen = arrlen - ofs; } else { if (ofs < 0) { ofs = arrlen + ofs; if (ofs < 0) ofs = 0; } else if ((uint64_t)ofs > arrlen) { ofs = arrlen; } if (remlen < 0) { remlen = arrlen - ofs + remlen; if (remlen < 0) remlen = 0; } else if ((uint64_t)remlen > arrlen - (uint64_t)ofs) { remlen = arrlen - ofs; } addlen -= 3; } if (addlen < (uint64_t)remlen) { ucv_array_delete(arr, ofs, remlen - addlen); } else if (addlen > (uint64_t)remlen) { for (idx = arrlen; idx > (uint64_t)ofs; idx--) ucv_array_set(arr, idx + addlen - remlen - 1, ucv_get(ucv_array_get(arr, idx - 1))); } for (idx = 0; idx < addlen; idx++) ucv_array_set(arr, ofs + idx, ucv_get(uc_fn_arg(3 + idx))); return ucv_get(arr); } static uc_value_t * uc_split(uc_vm_t *vm, size_t nargs) { uc_value_t *str = uc_fn_arg(0); uc_value_t *sep = uc_fn_arg(1); uc_value_t *arr = NULL; const char *p, *sepstr, *splitstr; int eflags = 0, res; regmatch_t pmatch; uc_regexp_t *re; size_t seplen; if (!sep || ucv_type(str) != UC_STRING) return NULL; arr = ucv_array_new(vm); splitstr = ucv_string_get(str); if (ucv_type(sep) == UC_REGEXP) { re = (uc_regexp_t *)sep; while (true) { res = regexec(&re->regexp, splitstr, 1, &pmatch, eflags); if (res == REG_NOMATCH) break; ucv_array_push(arr, ucv_string_new_length(splitstr, pmatch.rm_so)); splitstr += pmatch.rm_eo; eflags |= REG_NOTBOL; } ucv_array_push(arr, ucv_string_new(splitstr)); } else if (ucv_type(sep) == UC_STRING) { sepstr = ucv_string_get(sep); for (p = splitstr, seplen = strlen(sepstr); *p; p++) { if (!strncmp(p, sepstr, seplen)) { if (*sepstr || p > splitstr) ucv_array_push(arr, ucv_string_new_length(splitstr, p - splitstr)); splitstr = p + seplen; p = splitstr - (*sepstr ? 1 : 0); } } ucv_array_push(arr, ucv_string_new_length(splitstr, p - splitstr)); } else { ucv_put(arr); return NULL; } return arr; } static uc_value_t * uc_substr(uc_vm_t *vm, size_t nargs) { uc_value_t *str = uc_fn_arg(0); int64_t ofs = uc_cast_int64(uc_fn_arg(1)); int64_t sublen = uc_cast_int64(uc_fn_arg(2)); const char *p; size_t len; if (ucv_type(str) != UC_STRING) return NULL; p = ucv_string_get(str); len = ucv_string_length(str); switch (nargs) { case 1: ofs = 0; sublen = len; break; case 2: if (ofs < 0) { ofs = len + ofs; if (ofs < 0) ofs = 0; } else if ((uint64_t)ofs > len) { ofs = len; } sublen = len - ofs; break; default: if (ofs < 0) { ofs = len + ofs; if (ofs < 0) ofs = 0; } else if ((uint64_t)ofs > len) { ofs = len; } if (sublen < 0) { sublen = len - ofs + sublen; if (sublen < 0) sublen = 0; } else if ((uint64_t)sublen > len - (uint64_t)ofs) { sublen = len - ofs; } break; } return ucv_string_new_length(p + ofs, sublen); } static uc_value_t * uc_time(uc_vm_t *vm, size_t nargs) { time_t t = time(NULL); return ucv_int64_new((int64_t)t); } static uc_value_t * uc_uc(uc_vm_t *vm, size_t nargs) { char *str = ucv_to_string(vm, uc_fn_arg(0)); uc_value_t *rv = NULL; char *p; if (!str) return NULL; for (p = str; *p; p++) if (*p >= 'a' && *p <= 'z') *p &= ~32; rv = ucv_string_new(str); free(str); return rv; } static uc_value_t * uc_uchr(uc_vm_t *vm, size_t nargs) { uc_value_t *rv = NULL; size_t idx, ulen; char *p, *str; int64_t n; int rem; for (idx = 0, ulen = 0; idx < nargs; idx++) { n = uc_cast_int64(uc_fn_arg(idx)); if (errno == EINVAL || errno == EOVERFLOW || n < 0 || n > 0x10FFFF) ulen += 3; else if (n <= 0x7F) ulen++; else if (n <= 0x7FF) ulen += 2; else if (n <= 0xFFFF) ulen += 3; else ulen += 4; } str = xalloc(ulen); for (idx = 0, p = str, rem = ulen; idx < nargs; idx++) { n = uc_cast_int64(uc_fn_arg(idx)); if (errno == EINVAL || errno == EOVERFLOW || n < 0 || n > 0x10FFFF) n = 0xFFFD; if (!utf8enc(&p, &rem, n)) break; } rv = ucv_string_new_length(str, ulen); free(str); return rv; } static uc_value_t * uc_values(uc_vm_t *vm, size_t nargs) { uc_value_t *obj = uc_fn_arg(0); uc_value_t *arr; if (ucv_type(obj) != UC_OBJECT) return NULL; arr = ucv_array_new(vm); ucv_object_foreach(obj, key, val) { (void)key; ucv_array_push(arr, ucv_get(val)); } return arr; } static uc_value_t * uc_trim_common(uc_vm_t *vm, size_t nargs, bool start, bool end) { uc_value_t *str = uc_fn_arg(0); uc_value_t *chr = uc_fn_arg(1); const char *p, *c; size_t len; if (ucv_type(str) != UC_STRING || (chr != NULL && ucv_type(chr) != UC_STRING)) return NULL; c = ucv_string_get(chr); c = c ? c : " \t\r\n"; p = ucv_string_get(str); len = ucv_string_length(str); if (start) { while (*p) { if (!strchr(c, *p)) break; p++; len--; } } if (end) { while (len > 0) { if (!strchr(c, p[len - 1])) break; len--; } } return ucv_string_new_length(p, len); } static uc_value_t * uc_trim(uc_vm_t *vm, size_t nargs) { return uc_trim_common(vm, nargs, true, true); } static uc_value_t * uc_ltrim(uc_vm_t *vm, size_t nargs) { return uc_trim_common(vm, nargs, true, false); } static uc_value_t * uc_rtrim(uc_vm_t *vm, size_t nargs) { return uc_trim_common(vm, nargs, false, true); } static void uc_printf_common(uc_vm_t *vm, size_t nargs, uc_stringbuf_t *buf) { uc_value_t *fmt = uc_fn_arg(0); char *fp, sfmt[sizeof("%0- 123456789.123456789%")]; union { char *s; int64_t n; double d; } arg; const char *fstr, *last, *p; uc_type_t t = UC_NULL; size_t argidx = 1; int i, pad_size; if (ucv_type(fmt) == UC_STRING) fstr = ucv_string_get(fmt); else fstr = ""; for (last = p = fstr; *p; p++) { if (*p == '%') { ucv_stringbuf_addstr(buf, last, p - last); last = p++; fp = sfmt; *fp++ = '%'; memset(&arg, 0, sizeof(arg)); while (*p != '\0' && strchr("0- ", *p)) { if (fp + 1 >= sfmt + sizeof(sfmt)) goto next; *fp++ = *p++; } if (*p >= '1' && *p <= '9') { if (fp + 1 >= sfmt + sizeof(sfmt)) goto next; *fp++ = *p++; while (isdigit(*p)) { if (fp + 1 >= sfmt + sizeof(sfmt)) goto next; *fp++ = *p++; } } if (*p == '.') { if (fp + 1 >= sfmt + sizeof(sfmt)) goto next; *fp++ = *p++; if (*p == '-') { if (fp + 1 >= sfmt + sizeof(sfmt)) goto next; *fp++ = *p++; } while (isdigit(*p)) { if (fp + 1 >= sfmt + sizeof(sfmt)) goto next; *fp++ = *p++; } } if (!strncmp(p, "hh", 2) || !strncmp(p, "ll", 2)) { if (fp + 2 >= sfmt + sizeof(sfmt)) goto next; *fp++ = *p++; *fp++ = *p++; } else if (*p == 'h' || *p == 'l') { if (fp + 1 >= sfmt + sizeof(sfmt)) goto next; *fp++ = *p++; } switch (*p) { case 'd': case 'i': case 'o': case 'u': case 'x': case 'X': t = UC_INTEGER; if (argidx < nargs) arg.n = uc_cast_int64(uc_fn_arg(argidx++)); else arg.n = 0; break; case 'e': case 'E': case 'f': case 'F': case 'g': case 'G': t = UC_DOUBLE; if (argidx < nargs) arg.d = uc_cast_double(uc_fn_arg(argidx++)); else arg.d = 0; break; case 'c': t = UC_INTEGER; if (argidx < nargs) arg.n = uc_cast_int64(uc_fn_arg(argidx++)) & 0xff; else arg.n = 0; break; case 's': t = UC_STRING; if (argidx < nargs) arg.s = ucv_to_string(vm, uc_fn_arg(argidx++)); else arg.s = NULL; arg.s = arg.s ? arg.s : xstrdup("(null)"); break; case 'J': t = UC_STRING; pad_size = 0; for (i = 0; sfmt + i < fp; i++) { if (sfmt[i] == '.') { for (pad_size = 0, i++; sfmt + i < fp && isdigit(sfmt[i]); i++) pad_size = pad_size * 10 + (sfmt[i] - '0'); pad_size++; fp = &sfmt[i-1]; break; } } if (argidx < nargs) { arg.s = ucv_to_jsonstring_formatted(vm, uc_fn_arg(argidx++), pad_size > 0 ? (pad_size > 1 ? ' ' : '\t') : '\0', pad_size > 0 ? (pad_size > 1 ? pad_size - 1 : 1) : 0); } else { arg.s = NULL; } arg.s = arg.s ? arg.s : xstrdup("null"); break; case '%': t = UC_NULL; break; case '\0': p--; /* fall through */ default: goto next; } if (fp + 2 >= sfmt + sizeof(sfmt)) goto next; *fp++ = (t == UC_STRING) ? 's' : *p; *fp = 0; switch (t) { case UC_INTEGER: ucv_stringbuf_printf(buf, sfmt, arg.n); break; case UC_DOUBLE: ucv_stringbuf_printf(buf, sfmt, arg.d); break; case UC_STRING: ucv_stringbuf_printf(buf, sfmt, arg.s); break; default: ucv_stringbuf_addstr(buf, sfmt, strlen(sfmt)); break; } last = p + 1; next: if (t == UC_STRING) free(arg.s); continue; } } ucv_stringbuf_addstr(buf, last, p - last); } static uc_value_t * uc_sprintf(uc_vm_t *vm, size_t nargs) { uc_stringbuf_t *buf = ucv_stringbuf_new(); uc_printf_common(vm, nargs, buf); return ucv_stringbuf_finish(buf); } static uc_value_t * uc_printf(uc_vm_t *vm, size_t nargs) { uc_stringbuf_t *buf = xprintbuf_new(); size_t len; uc_printf_common(vm, nargs, buf); len = fwrite(buf->buf, 1, printbuf_length(buf), vm->output); printbuf_free(buf); return ucv_int64_new(len); } static bool uc_require_so(uc_vm_t *vm, const char *path, uc_value_t **res) { void (*init)(uc_vm_t *, uc_value_t *); uc_value_t *scope; struct stat st; void *dlh; if (stat(path, &st)) return false; dlerror(); dlh = dlopen(path, RTLD_LAZY|RTLD_LOCAL); if (!dlh) { uc_vm_raise_exception(vm, EXCEPTION_RUNTIME, "Unable to dlopen file '%s': %s", path, dlerror()); return true; } *(void **)(&init) = dlsym(dlh, "uc_module_entry"); if (!init) { uc_vm_raise_exception(vm, EXCEPTION_RUNTIME, "Module '%s' provides no 'uc_module_entry' function", path); return true; } scope = ucv_object_new(vm); init(vm, scope); *res = scope; return true; } static bool uc_require_ucode(uc_vm_t *vm, const char *path, uc_value_t *scope, uc_value_t **res) { uc_exception_type_t extype; uc_function_t *function; uc_value_t *prev_scope; uc_value_t *closure; uc_source_t *source; struct stat st; char *err; if (stat(path, &st)) return false; source = uc_source_new_file(path); if (!source) { uc_vm_raise_exception(vm, EXCEPTION_RUNTIME, "Unable to open file '%s': %s", path, strerror(errno)); return true; } function = uc_compile(vm->config, source, &err); if (!function) { uc_vm_raise_exception(vm, EXCEPTION_RUNTIME, "Unable to compile module '%s':\n%s", path, err); uc_source_put(source); free(err); return true; } closure = ucv_closure_new(vm, function, false); uc_vm_stack_push(vm, closure); if (scope) { prev_scope = ucv_get(uc_vm_scope_get(vm)); uc_vm_scope_set(vm, ucv_get(scope)); } extype = uc_vm_call(vm, false, 0); if (scope) uc_vm_scope_set(vm, prev_scope); if (extype == EXCEPTION_NONE) *res = uc_vm_stack_pop(vm); uc_source_put(source); return true; } static bool uc_require_path(uc_vm_t *vm, const char *path_template, const char *name, uc_value_t **res) { uc_stringbuf_t *buf = xprintbuf_new(); const char *p, *q, *last; uc_value_t *modtable; bool rv; modtable = ucv_property_get(uc_vm_scope_get(vm), "modules"); *res = ucv_get(ucv_object_get(modtable, name, &rv)); if (rv) goto out; p = strchr(path_template, '*'); if (!p) goto out; ucv_stringbuf_addstr(buf, path_template, p - path_template); for (q = last = name;; q++) { if (*q == '.' || *q == '\0') { ucv_stringbuf_addstr(buf, last, q - last); if (*q) ucv_stringbuf_append(buf, "/"); else ucv_stringbuf_addstr(buf, p + 1, strlen(p + 1)); if (*q == '\0') break; last = q + 1; } else if (!isalnum(*q) && *q != '_') { goto out; } } if (!strcmp(p + 1, ".so")) rv = uc_require_so(vm, buf->buf, res); else if (!strcmp(p + 1, ".uc")) rv = uc_require_ucode(vm, buf->buf, NULL, res); if (rv) ucv_object_add(modtable, name, ucv_get(*res)); out: printbuf_free(buf); return rv; } static uc_value_t * uc_require(uc_vm_t *vm, size_t nargs) { uc_value_t *val = uc_fn_arg(0); uc_value_t *search, *se, *res; size_t arridx, arrlen; const char *name; if (ucv_type(val) != UC_STRING) return NULL; name = ucv_string_get(val); search = ucv_property_get(uc_vm_scope_get(vm), "REQUIRE_SEARCH_PATH"); if (ucv_type(search) != UC_ARRAY) { uc_vm_raise_exception(vm, EXCEPTION_RUNTIME, "Global require search path not set"); return NULL; } for (arridx = 0, arrlen = ucv_array_length(search); arridx < arrlen; arridx++) { se = ucv_array_get(search, arridx); if (ucv_type(se) != UC_STRING) continue; if (uc_require_path(vm, ucv_string_get(se), name, &res)) return res; } uc_vm_raise_exception(vm, EXCEPTION_RUNTIME, "No module named '%s' could be found", name); return NULL; } static uc_value_t * uc_iptoarr(uc_vm_t *vm, size_t nargs) { uc_value_t *ip = uc_fn_arg(0); uc_value_t *res; union { uint8_t u8[4]; struct in_addr in; struct in6_addr in6; } a; int i; if (ucv_type(ip) != UC_STRING) return NULL; if (inet_pton(AF_INET6, ucv_string_get(ip), &a)) { res = ucv_array_new(vm); for (i = 0; i < 16; i++) ucv_array_push(res, ucv_int64_new(a.in6.s6_addr[i])); return res; } else if (inet_pton(AF_INET, ucv_string_get(ip), &a)) { res = ucv_array_new(vm); ucv_array_push(res, ucv_int64_new(a.u8[0])); ucv_array_push(res, ucv_int64_new(a.u8[1])); ucv_array_push(res, ucv_int64_new(a.u8[2])); ucv_array_push(res, ucv_int64_new(a.u8[3])); return res; } return NULL; } static int check_byte(uc_value_t *v) { int n; if (ucv_type(v) != UC_INTEGER) return -1; n = ucv_int64_get(v); if (n < 0 || n > 255) return -1; return n; } static uc_value_t * uc_arrtoip(uc_vm_t *vm, size_t nargs) { uc_value_t *arr = uc_fn_arg(0); union { uint8_t u8[4]; struct in6_addr in6; } a; char buf[INET6_ADDRSTRLEN]; int i, n; if (ucv_type(arr) != UC_ARRAY) return NULL; switch (ucv_array_length(arr)) { case 4: for (i = 0; i < 4; i++) { n = check_byte(ucv_array_get(arr, i)); if (n < 0) return NULL; a.u8[i] = n; } inet_ntop(AF_INET, &a, buf, sizeof(buf)); return ucv_string_new(buf); case 16: for (i = 0; i < 16; i++) { n = check_byte(ucv_array_get(arr, i)); if (n < 0) return NULL; a.in6.s6_addr[i] = n; } inet_ntop(AF_INET6, &a, buf, sizeof(buf)); return ucv_string_new(buf); default: return NULL; } } static uc_value_t * uc_match(uc_vm_t *vm, size_t nargs) { uc_value_t *subject = uc_fn_arg(0); uc_value_t *pattern = uc_fn_arg(1); uc_value_t *rv = NULL, *m; regmatch_t pmatch[10]; int eflags = 0, res; uc_regexp_t *re; bool freeable; char *p; size_t i; if (ucv_type(pattern) != UC_REGEXP || !subject) return NULL; p = uc_cast_string(vm, &subject, &freeable); re = (uc_regexp_t *)pattern; while (true) { res = regexec(&re->regexp, p, ARRAY_SIZE(pmatch), pmatch, eflags); if (res == REG_NOMATCH) break; m = ucv_array_new(vm); for (i = 0; i < ARRAY_SIZE(pmatch) && pmatch[i].rm_so != -1; i++) { ucv_array_push(m, ucv_string_new_length(p + pmatch[i].rm_so, pmatch[i].rm_eo - pmatch[i].rm_so)); } if (re->global) { if (!rv) rv = ucv_array_new(vm); ucv_array_push(rv, m); p += pmatch[0].rm_eo; eflags |= REG_NOTBOL; } else { rv = m; break; } } if (freeable) free(p); return rv; } static uc_value_t * uc_replace_cb(uc_vm_t *vm, uc_value_t *func, const char *subject, regmatch_t *pmatch, size_t plen, uc_stringbuf_t *resbuf) { uc_value_t *rv; size_t i; uc_vm_ctx_push(vm); uc_vm_stack_push(vm, ucv_get(func)); for (i = 0; i < plen && pmatch[i].rm_so != -1; i++) { uc_vm_stack_push(vm, ucv_string_new_length(subject + pmatch[i].rm_so, pmatch[i].rm_eo - pmatch[i].rm_so)); } if (uc_vm_call(vm, true, i)) return NULL; rv = uc_vm_stack_pop(vm); ucv_to_stringbuf(vm, resbuf, rv, false); ucv_put(rv); return NULL; } static void uc_replace_str(uc_vm_t *vm, uc_value_t *str, const char *subject, regmatch_t *pmatch, size_t plen, uc_stringbuf_t *resbuf) { bool esc = false; char *p, *r; uint8_t i; for (p = r = ucv_to_string(vm, str); *p; p++) { if (esc) { switch (*p) { case '&': if (pmatch[0].rm_so != -1) ucv_stringbuf_addstr(resbuf, subject + pmatch[0].rm_so, pmatch[0].rm_eo - pmatch[0].rm_so); break; case '`': if (pmatch[0].rm_so != -1) ucv_stringbuf_addstr(resbuf, subject, pmatch[0].rm_so); break; case '\'': if (pmatch[0].rm_so != -1) ucv_stringbuf_addstr(resbuf, subject + pmatch[0].rm_eo, strlen(subject + pmatch[0].rm_eo)); break; case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': i = *p - '0'; if (i < plen && pmatch[i].rm_so != -1) { ucv_stringbuf_addstr(resbuf, subject + pmatch[i].rm_so, pmatch[i].rm_eo - pmatch[i].rm_so); } else { ucv_stringbuf_append(resbuf, "$"); ucv_stringbuf_addstr(resbuf, p, 1); } break; case '$': ucv_stringbuf_append(resbuf, "$"); break; default: ucv_stringbuf_append(resbuf, "$"); ucv_stringbuf_addstr(resbuf, p, 1); } esc = false; } else if (*p == '$') { esc = true; } else { ucv_stringbuf_addstr(resbuf, p, 1); } } free(r); } static uc_value_t * uc_replace(uc_vm_t *vm, size_t nargs) { char *sb = NULL, *pt = NULL, *p, *l; uc_value_t *subject = uc_fn_arg(0); uc_value_t *pattern = uc_fn_arg(1); uc_value_t *replace = uc_fn_arg(2); bool sb_freeable, pt_freeable; uc_value_t *rv = NULL; uc_stringbuf_t *resbuf; regmatch_t pmatch[10]; int eflags = 0, res; uc_regexp_t *re; size_t pl; if (!pattern || !subject || !replace) return NULL; sb = uc_cast_string(vm, &subject, &sb_freeable); resbuf = ucv_stringbuf_new(); if (ucv_type(pattern) == UC_REGEXP) { re = (uc_regexp_t *)pattern; p = sb; while (true) { res = regexec(&re->regexp, p, ARRAY_SIZE(pmatch), pmatch, eflags); if (res == REG_NOMATCH) break; ucv_stringbuf_addstr(resbuf, p, pmatch[0].rm_so); if (ucv_is_callable(replace)) { rv = uc_replace_cb(vm, replace, p, pmatch, ARRAY_SIZE(pmatch), resbuf); if (rv) { if (sb_freeable) free(sb); return rv; } } else { uc_replace_str(vm, replace, p, pmatch, ARRAY_SIZE(pmatch), resbuf); } p += pmatch[0].rm_eo; if (re->global) eflags |= REG_NOTBOL; else break; } ucv_stringbuf_addstr(resbuf, p, strlen(p)); } else { pt = uc_cast_string(vm, &pattern, &pt_freeable); pl = strlen(pt); for (l = p = sb; *p; p++) { if (!strncmp(p, pt, pl)) { ucv_stringbuf_addstr(resbuf, l, p - l); pmatch[0].rm_so = p - l; pmatch[0].rm_eo = pmatch[0].rm_so + pl; if (ucv_is_callable(replace)) { rv = uc_replace_cb(vm, replace, l, pmatch, 1, resbuf); if (rv) { if (sb_freeable) free(sb); if (pt_freeable) free(pt); return rv; } } else { uc_replace_str(vm, replace, l, pmatch, 1, resbuf); } l = p + pl; p += pl - 1; } } ucv_stringbuf_addstr(resbuf, l, strlen(l)); if (pt_freeable) free(pt); } if (sb_freeable) free(sb); return ucv_stringbuf_finish(resbuf); } static uc_value_t * uc_json(uc_vm_t *vm, size_t nargs) { uc_value_t *rv, *src = uc_fn_arg(0); struct json_tokener *tok = NULL; enum json_tokener_error err; json_object *jso; const char *str; size_t len; if (ucv_type(src) != UC_STRING) { uc_vm_raise_exception(vm, EXCEPTION_TYPE, "Passed value is not a string"); return NULL; } tok = xjs_new_tokener(); str = ucv_string_get(src); len = ucv_string_length(src); /* NB: the len + 1 here is intentional to pass the terminating \0 byte * to the json-c parser. This is required to work-around upstream * issue #681 */ jso = json_tokener_parse_ex(tok, str, len + 1); err = json_tokener_get_error(tok); if (err == json_tokener_continue) { json_object_put(jso); uc_vm_raise_exception(vm, EXCEPTION_SYNTAX, "Unexpected end of string in JSON data"); return NULL; } else if (err != json_tokener_success) { json_object_put(jso); uc_vm_raise_exception(vm, EXCEPTION_SYNTAX, "Failed to parse JSON string: %s", json_tokener_error_desc(err)); return NULL; } else if (json_tokener_get_parse_end(tok) < len) { json_object_put(jso); uc_vm_raise_exception(vm, EXCEPTION_SYNTAX, "Trailing garbage after JSON data"); return NULL; } json_tokener_free(tok); rv = ucv_from_json(vm, jso); json_object_put(jso); return rv; } static char * include_path(const char *curpath, const char *incpath) { char *dup, *res; int len; if (*incpath == '/') return realpath(incpath, NULL); if (curpath) { dup = strdup(curpath); if (!dup) return NULL; len = asprintf(&res, "%s/%s", dirname(dup), incpath); free(dup); } else { len = asprintf(&res, "./%s", incpath); } if (len == -1) return NULL; dup = realpath(res, NULL); free(res); return dup; } static uc_value_t * uc_include(uc_vm_t *vm, size_t nargs) { uc_value_t *path = uc_fn_arg(0); uc_value_t *scope = uc_fn_arg(1); uc_value_t *rv = NULL, *sc = NULL; uc_closure_t *closure = NULL; size_t i; char *p; if (ucv_type(path) != UC_STRING) { uc_vm_raise_exception(vm, EXCEPTION_TYPE, "Passed filename is not a string"); return NULL; } if (scope && ucv_type(scope) != UC_OBJECT) { uc_vm_raise_exception(vm, EXCEPTION_TYPE, "Passed scope value is not an object"); return NULL; } /* find calling closure */ for (i = vm->callframes.count; i > 0; i--) { closure = vm->callframes.entries[i - 1].closure; if (closure) break; } if (!closure) return NULL; p = include_path(closure->function->source->filename, ucv_string_get(path)); if (!p) { uc_vm_raise_exception(vm, EXCEPTION_RUNTIME, "Include file not found"); return NULL; } if (ucv_prototype_get(scope)) { sc = ucv_get(scope); } else if (scope) { sc = ucv_object_new(vm); ucv_object_foreach(scope, key, val) ucv_object_add(sc, key, ucv_get(val)); ucv_prototype_set(sc, ucv_get(uc_vm_scope_get(vm))); } else { sc = ucv_get(uc_vm_scope_get(vm)); } if (uc_require_ucode(vm, p, sc, &rv)) ucv_put(rv); ucv_put(sc); free(p); return NULL; } static uc_value_t * uc_render(uc_vm_t *vm, size_t nargs) { uc_string_t *ustr = NULL; FILE *mem, *prev; size_t len = 0; mem = open_memstream((char **)&ustr, &len); if (!mem) goto out; /* reserve space for uc_string_t header... */ if (fseek(mem, sizeof(*ustr), SEEK_SET)) goto out; /* divert VM output to memory fd */ prev = vm->output; vm->output = mem; /* execute include */ (void) uc_include(vm, nargs); /* restore previous VM output */ vm->output = prev; fclose(mem); /* update uc_string_t length */ ustr->header.type = UC_STRING; ustr->header.refcount = 1; ustr->length = len - sizeof(*ustr); return &ustr->header; out: uc_vm_raise_exception(vm, EXCEPTION_RUNTIME, "Unable to initialize output memory: %s", strerror(errno)); if (mem) fclose(mem); free(ustr); return NULL; } static uc_value_t * uc_warn(uc_vm_t *vm, size_t nargs) { return uc_print_common(vm, nargs, stderr); } static uc_value_t * uc_system(uc_vm_t *vm, size_t nargs) { uc_value_t *cmdline = uc_fn_arg(0); uc_value_t *timeout = uc_fn_arg(1); const char **arglist, *fn; sigset_t sigmask, sigomask; struct timespec ts; size_t i, len; int64_t tms; pid_t cld; int rc; if (timeout && (ucv_type(timeout) != UC_INTEGER || ucv_int64_get(timeout) < 0)) { uc_vm_raise_exception(vm, EXCEPTION_TYPE, "Invalid timeout specified"); return NULL; } switch (ucv_type(cmdline)) { case UC_STRING: arglist = xalloc(sizeof(*arglist) * 4); arglist[0] = xstrdup("/bin/sh"); arglist[1] = xstrdup("-c"); arglist[2] = ucv_to_string(vm, cmdline); arglist[3] = NULL; break; case UC_ARRAY: len = ucv_array_length(cmdline); if (len == 0) { uc_vm_raise_exception(vm, EXCEPTION_TYPE, "Passed command array is empty"); return NULL; } arglist = xalloc(sizeof(*arglist) * (len + 1)); for (i = 0; i < len; i++) arglist[i] = ucv_to_string(vm, ucv_array_get(cmdline, i)); arglist[i] = NULL; break; default: uc_vm_raise_exception(vm, EXCEPTION_TYPE, "Passed command is neither string nor array"); return NULL; } tms = timeout ? ucv_int64_get(timeout) : 0; if (tms > 0) { sigemptyset(&sigmask); sigaddset(&sigmask, SIGCHLD); if (sigprocmask(SIG_BLOCK, &sigmask, &sigomask) < 0) { fn = "sigprocmask"; goto fail; } } cld = fork(); switch (cld) { case -1: fn = "fork"; goto fail; case 0: execvp(arglist[0], (char * const *)arglist); exit(-1); break; default: if (tms > 0) { ts.tv_sec = tms / 1000; ts.tv_nsec = (tms % 1000) * 1000000; while (1) { if (sigtimedwait(&sigmask, NULL, &ts) < 0) { if (errno == EINTR) continue; if (errno != EAGAIN) { fn = "sigtimedwait"; goto fail; } kill(cld, SIGKILL); } break; } } if (waitpid(cld, &rc, 0) < 0) { fn = "waitpid"; goto fail; } if (tms > 0) sigprocmask(SIG_SETMASK, &sigomask, NULL); for (i = 0; arglist[i]; i++) free((char *)arglist[i]); free(arglist); if (WIFEXITED(rc)) return ucv_int64_new(WEXITSTATUS(rc)); else if (WIFSIGNALED(rc)) return ucv_int64_new(-WTERMSIG(rc)); else if (WIFSTOPPED(rc)) return ucv_int64_new(-WSTOPSIG(rc)); return NULL; } fail: if (tms > 0) sigprocmask(SIG_SETMASK, &sigomask, NULL); for (i = 0; arglist[i]; i++) free((char *)arglist[i]); free(arglist); uc_vm_raise_exception(vm, EXCEPTION_RUNTIME, "%s(): %s", fn, strerror(errno)); return NULL; } static uc_value_t * uc_trace(uc_vm_t *vm, size_t nargs) { uc_value_t *level = uc_fn_arg(0); uint8_t prev_level; if (ucv_type(level) != UC_INTEGER) { uc_vm_raise_exception(vm, EXCEPTION_TYPE, "Invalid level specified"); return NULL; } prev_level = vm->trace; vm->trace = ucv_int64_get(level); return ucv_int64_new(prev_level); } static uc_value_t * uc_proto(uc_vm_t *vm, size_t nargs) { uc_value_t *val = uc_fn_arg(0); uc_value_t *proto = NULL; if (nargs < 2) return ucv_get(ucv_prototype_get(val)); proto = uc_fn_arg(1); if (!ucv_prototype_set(val, proto)) uc_vm_raise_exception(vm, EXCEPTION_TYPE, "Passed value is neither a prototype, ressource or object"); ucv_get(proto); return ucv_get(val); } static uc_value_t * uc_sleep(uc_vm_t *vm, size_t nargs) { uc_value_t *duration = uc_fn_arg(0); struct timeval tv; int64_t ms; ms = uc_cast_int64(duration); if (errno != 0 || ms <= 0) return ucv_boolean_new(false); tv.tv_sec = ms / 1000; tv.tv_usec = (ms % 1000) * 1000; select(0, NULL, NULL, NULL, &tv); return ucv_boolean_new(true); } static uc_value_t * uc_assert(uc_vm_t *vm, size_t nargs) { uc_value_t *cond = uc_fn_arg(0); uc_value_t *msg = uc_fn_arg(1); bool freeable = false; char *s; if (!ucv_is_truish(cond)) { s = msg ? uc_cast_string(vm, &msg, &freeable) : "Assertion failed"; uc_vm_raise_exception(vm, EXCEPTION_USER, "%s", s); if (freeable) free(s); return NULL; } return ucv_get(cond); } static uc_value_t * uc_regexp(uc_vm_t *vm, size_t nargs) { bool icase = false, newline = false, global = false, freeable; uc_value_t *source = uc_fn_arg(0); uc_value_t *flags = uc_fn_arg(1); uc_value_t *regex = NULL; char *p, *err = NULL; if (flags) { if (ucv_type(flags) != UC_STRING) { uc_vm_raise_exception(vm, EXCEPTION_TYPE, "Given flags argument is not a string"); return NULL; } for (p = ucv_string_get(flags); *p; p++) { switch (*p) { case 'i': icase = true; break; case 's': newline = true; break; case 'g': global = true; break; default: uc_vm_raise_exception(vm, EXCEPTION_TYPE, "Unrecognized flag character '%c'", *p); return NULL; } } } p = uc_cast_string(vm, &source, &freeable); regex = ucv_regexp_new(p, icase, newline, global, &err); if (freeable) free(p); if (err) { uc_vm_raise_exception(vm, EXCEPTION_SYNTAX, "%s", err); ucv_put(regex); free(err); return NULL; } return regex; } static uc_value_t * uc_wildcard(uc_vm_t *vm, size_t nargs) { uc_value_t *subject = uc_fn_arg(0); uc_value_t *pattern = uc_fn_arg(1); uc_value_t *icase = uc_fn_arg(2); int flags = 0, rv; bool freeable; char *s; if (!subject || ucv_type(pattern) != UC_STRING) return NULL; if (ucv_is_truish(icase)) flags |= FNM_CASEFOLD; s = uc_cast_string(vm, &subject, &freeable); rv = fnmatch(ucv_string_get(pattern), s, flags); if (freeable) free(s); return ucv_boolean_new(rv == 0); } static uc_value_t * uc_sourcepath(uc_vm_t *vm, size_t nargs) { uc_value_t *calldepth = uc_fn_arg(0); uc_value_t *dironly = uc_fn_arg(1); uc_value_t *rv = NULL; uc_callframe_t *frame; char *path = NULL; int64_t depth; size_t i; depth = uc_cast_int64(calldepth); if (errno) depth = 0; for (i = vm->callframes.count; i > 0; i--) { frame = &vm->callframes.entries[i - 1]; if (!frame->closure) continue; if (depth > 0) { depth--; continue; } path = realpath(frame->closure->function->source->filename, NULL); break; } if (path) { if (ucv_is_truish(dironly)) rv = ucv_string_new(dirname(path)); else rv = ucv_string_new(path); free(path); } return rv; } static uc_value_t * uc_min_max(uc_vm_t *vm, size_t nargs, int cmp) { uc_value_t *rv = NULL, *val; bool set = false; size_t i; for (i = 0; i < nargs; i++) { val = uc_fn_arg(i); if (!set || ucv_compare(cmp, val, rv)) { set = true; rv = val; } } return ucv_get(rv); } static uc_value_t * uc_min(uc_vm_t *vm, size_t nargs) { return uc_min_max(vm, nargs, I_LT); } static uc_value_t * uc_max(uc_vm_t *vm, size_t nargs) { return uc_min_max(vm, nargs, I_GT); } /* ------------------------------------------------------------------------- * The following base64 encoding and decoding routines are taken from * https://git.openwrt.org/?p=project/libubox.git;a=blob;f=base64.c * and modified for use in ucode. * * Original copyright and license statements below. */ /* * base64 - libubox base64 functions * * Copyright (C) 2015 Felix Fietkau * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ /* $OpenBSD: base64.c,v 1.7 2013/12/31 02:32:56 tedu Exp $ */ /* * Copyright (c) 1996 by Internet Software Consortium. * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS * SOFTWARE. */ /* * Portions Copyright (c) 1995 by International Business Machines, Inc. * * International Business Machines, Inc. (hereinafter called IBM) grants * permission under its copyrights to use, copy, modify, and distribute this * Software with or without fee, provided that the above copyright notice and * all paragraphs of this notice appear in all copies, and that the name of IBM * not be used in connection with the marketing of any product incorporating * the Software or modifications thereof, without specific, written prior * permission. * * To the extent it has a right to do so, IBM grants an immunity from suit * under its patents, if any, for the use, sale or manufacture of products to * the extent that such products are used for performing Domain Name System * dynamic updates in TCP/IP networks by means of the Software. No immunity is * granted for any product per se or for any other function of any product. * * THE SOFTWARE IS PROVIDED "AS IS", AND IBM DISCLAIMS ALL WARRANTIES, * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE. IN NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL, * DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER ARISING * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE, EVEN * IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES. */ /* skips all whitespace anywhere. converts characters, four at a time, starting at (or after) src from base - 64 numbers into three 8 bit bytes in the target area. it returns the number of data bytes stored at the target, or -1 on error. */ static uc_value_t * uc_b64dec(uc_vm_t *vm, size_t nargs) { enum { BYTE1, BYTE2, BYTE3, BYTE4 } state; uc_value_t *str = uc_fn_arg(0); uc_stringbuf_t *buf; const char *src; unsigned int ch; uint8_t val; size_t off; if (ucv_type(str) != UC_STRING) return NULL; buf = ucv_stringbuf_new(); src = ucv_string_get(str); off = printbuf_length(buf); state = BYTE1; /* memset the last expected output char to pre-grow the output buffer */ printbuf_memset(buf, off + (ucv_string_length(str) / 4) * 3, 0, 1); while ((ch = (unsigned char)*src++) != '\0') { if (isspace(ch)) /* Skip whitespace anywhere. */ continue; if (ch == '=') break; if (ch >= 'A' && ch <= 'Z') val = ch - 'A'; else if (ch >= 'a' && ch <= 'z') val = ch - 'a' + 26; else if (ch >= '0' && ch <= '9') val = ch - '0' + 52; else if (ch == '+') val = 62; else if (ch == '/') val = 63; else goto err; switch (state) { case BYTE1: buf->buf[off] = val << 2; state = BYTE2; break; case BYTE2: buf->buf[off++] |= val >> 4; buf->buf[off] = (val & 0x0f) << 4; state = BYTE3; break; case BYTE3: buf->buf[off++] |= val >> 2; buf->buf[off] = (val & 0x03) << 6; state = BYTE4; break; case BYTE4: buf->buf[off++] |= val; state = BYTE1; break; } } /* * We are done decoding Base-64 chars. Let's see if we ended * on a byte boundary, and/or with erroneous trailing characters. */ if (ch == '=') { /* We got a pad char. */ ch = (unsigned char)*src++; /* Skip it, get next. */ switch (state) { case BYTE1: /* Invalid = in first position */ case BYTE2: /* Invalid = in second position */ goto err; case BYTE3: /* Valid, means one byte of info */ /* Skip any number of spaces. */ for (; ch != '\0'; ch = (unsigned char)*src++) if (!isspace(ch)) break; /* Make sure there is another trailing = sign. */ if (ch != '=') goto err; ch = (unsigned char)*src++; /* Skip the = */ /* Fall through to "single trailing =" case. */ /* FALLTHROUGH */ case BYTE4: /* Valid, means two bytes of info */ /* * We know this char is an =. Is there anything but * whitespace after it? */ for (; ch != '\0'; ch = (unsigned char)*src++) if (!isspace(ch)) goto err; /* * Now make sure for cases BYTE3 and BYTE4 that the "extra" * bits that slopped past the last full byte were * zeros. If we don't check them, they become a * subliminal channel. */ if (buf->buf[off] != 0) goto err; } } else { /* * We ended by seeing the end of the string. Make sure we * have no partial bytes lying around. */ if (state != BYTE1) goto err; } /* Truncate buffer length to actual output length */ buf->bpos = off; return ucv_stringbuf_finish(buf); err: printbuf_free(buf); return NULL; } static const char Base64[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; static uc_value_t * uc_b64enc(uc_vm_t *vm, size_t nargs) { uc_value_t *str = uc_fn_arg(0); unsigned char input[3] = {0}; uc_stringbuf_t *buf; const char *src; char output[4]; size_t len, i; if (ucv_type(str) != UC_STRING) return NULL; buf = ucv_stringbuf_new(); src = ucv_string_get(str); len = ucv_string_length(str); while (2 < len) { input[0] = (unsigned char)*src++; input[1] = (unsigned char)*src++; input[2] = (unsigned char)*src++; len -= 3; output[0] = Base64[input[0] >> 2]; output[1] = Base64[((input[0] & 0x03) << 4) + (input[1] >> 4)]; output[2] = Base64[((input[1] & 0x0f) << 2) + (input[2] >> 6)]; output[3] = Base64[input[2] & 0x3f]; ucv_stringbuf_addstr(buf, output, sizeof(output)); } /* Now we worry about padding. */ if (0 != len) { /* Get what's left. */ input[0] = input[1] = input[2] = '\0'; for (i = 0; i < len; i++) input[i] = *src++; output[0] = Base64[input[0] >> 2]; output[1] = Base64[((input[0] & 0x03) << 4) + (input[1] >> 4)]; output[2] = (len == 1) ? '=' : Base64[((input[1] & 0x0f) << 2) + (input[2] >> 6)]; output[3] = '='; ucv_stringbuf_addstr(buf, output, sizeof(output)); } return ucv_stringbuf_finish(buf); } /* End of base64 code. * ------------------------------------------------------------------------- */ const uc_function_list_t uc_stdlib_functions[] = { { "chr", uc_chr }, { "die", uc_die }, { "exists", uc_exists }, { "exit", uc_exit }, { "filter", uc_filter }, { "getenv", uc_getenv }, { "hex", uc_hex }, { "index", uc_lindex }, { "int", uc_int }, { "join", uc_join }, { "keys", uc_keys }, { "lc", uc_lc }, { "length", uc_length }, { "ltrim", uc_ltrim }, { "map", uc_map }, { "ord", uc_ord }, { "pop", uc_pop }, { "print", uc_print }, { "push", uc_push }, { "reverse", uc_reverse }, { "rindex", uc_rindex }, { "rtrim", uc_rtrim }, { "shift", uc_shift }, { "sort", uc_sort }, { "splice", uc_splice }, { "split", uc_split }, { "substr", uc_substr }, { "time", uc_time }, { "trim", uc_trim }, { "type", uc_type }, { "uchr", uc_uchr }, { "uc", uc_uc }, { "unshift", uc_unshift }, { "values", uc_values }, { "sprintf", uc_sprintf }, { "printf", uc_printf }, { "require", uc_require }, { "iptoarr", uc_iptoarr }, { "arrtoip", uc_arrtoip }, { "match", uc_match }, { "replace", uc_replace }, { "json", uc_json }, { "include", uc_include }, { "warn", uc_warn }, { "system", uc_system }, { "trace", uc_trace }, { "proto", uc_proto }, { "sleep", uc_sleep }, { "assert", uc_assert }, { "render", uc_render }, { "regexp", uc_regexp }, { "wildcard", uc_wildcard }, { "sourcepath", uc_sourcepath }, { "min", uc_min }, { "max", uc_max }, { "b64dec", uc_b64dec }, { "b64enc", uc_b64enc } }; void uc_stdlib_load(uc_value_t *scope) { uc_function_list_register(scope, uc_stdlib_functions); }