diff options
Diffstat (limited to 'contrib/package/uhttpd/src/uhttpd-file.c')
-rw-r--r-- | contrib/package/uhttpd/src/uhttpd-file.c | 395 |
1 files changed, 0 insertions, 395 deletions
diff --git a/contrib/package/uhttpd/src/uhttpd-file.c b/contrib/package/uhttpd/src/uhttpd-file.c deleted file mode 100644 index 2a06f8520..000000000 --- a/contrib/package/uhttpd/src/uhttpd-file.c +++ /dev/null @@ -1,395 +0,0 @@ -/* - * uhttpd - Tiny single-threaded httpd - Static file handler - * - * Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org> - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#define _XOPEN_SOURCE 500 /* strptime() */ -#define _BSD_SOURCE /* scandir(), timegm() */ - -#include "uhttpd.h" -#include "uhttpd-utils.h" -#include "uhttpd-file.h" - -#include "uhttpd-mimetypes.h" - - -static const char * uh_file_mime_lookup(const char *path) -{ - struct mimetype *m = &uh_mime_types[0]; - char *p, *pd, *ps; - - ps = strrchr(path, '/'); - pd = strrchr(path, '.'); - - /* use either slash or dot as separator, whatever comes last */ - p = (ps && pd && (ps > pd)) ? ps : pd; - - if( (p != NULL) && (*(++p) != 0) ) - { - while( m->extn ) - { - if( ! strcasecmp(p, m->extn) ) - return m->mime; - - m++; - } - } - - return "application/octet-stream"; -} - -static const char * uh_file_mktag(struct stat *s) -{ - static char tag[128]; - - snprintf(tag, sizeof(tag), "\"%x-%x-%x\"", - (unsigned int) s->st_ino, - (unsigned int) s->st_size, - (unsigned int) s->st_mtime - ); - - return tag; -} - -static time_t uh_file_date2unix(const char *date) -{ - struct tm t; - - memset(&t, 0, sizeof(t)); - - if( strptime(date, "%a, %d %b %Y %H:%M:%S %Z", &t) != NULL ) - return timegm(&t); - - return 0; -} - -static char * uh_file_unix2date(time_t ts) -{ - static char str[128]; - struct tm *t = gmtime(&ts); - - strftime(str, sizeof(str), "%a, %d %b %Y %H:%M:%S GMT", t); - - return str; -} - -static char * uh_file_header_lookup(struct http_request *req, const char *name) -{ - int i; - - foreach_header(i, req->headers) - { - if( ! strcasecmp(req->headers[i], name) ) - return req->headers[i+1]; - } - - return NULL; -} - -static void uh_file_response_ok_hdrs(struct client *cl, struct http_request *req, struct stat *s) -{ - uh_http_sendf(cl, NULL, "Connection: close\r\n"); - - if( s ) - { - uh_http_sendf(cl, NULL, "ETag: %s\r\n", uh_file_mktag(s)); - uh_http_sendf(cl, NULL, "Last-Modified: %s\r\n", uh_file_unix2date(s->st_mtime)); - } - - uh_http_sendf(cl, NULL, "Date: %s\r\n", uh_file_unix2date(time(NULL))); -} - -static void uh_file_response_200(struct client *cl, struct http_request *req, struct stat *s) -{ - uh_http_sendf(cl, NULL, "HTTP/%.1f 200 OK\r\n", req->version); - uh_file_response_ok_hdrs(cl, req, s); -} - -static void uh_file_response_304(struct client *cl, struct http_request *req, struct stat *s) -{ - uh_http_sendf(cl, NULL, "HTTP/%.1f 304 Not Modified\r\n", req->version); - uh_file_response_ok_hdrs(cl, req, s); -} - -static void uh_file_response_412(struct client *cl, struct http_request *req) -{ - uh_http_sendf(cl, NULL, - "HTTP/%.1f 412 Precondition Failed\r\n" - "Connection: close\r\n", req->version); -} - -static int uh_file_if_match(struct client *cl, struct http_request *req, struct stat *s) -{ - const char *tag = uh_file_mktag(s); - char *hdr = uh_file_header_lookup(req, "If-Match"); - char *p; - int i; - - if( hdr ) - { - p = &hdr[0]; - - for( i = 0; i < strlen(hdr); i++ ) - { - if( (hdr[i] == ' ') || (hdr[i] == ',') ) - { - hdr[i++] = 0; - p = &hdr[i]; - } - else if( !strcmp(p, "*") || !strcmp(p, tag) ) - { - return 1; - } - } - - uh_file_response_412(cl, req); - return 0; - } - - return 1; -} - -static int uh_file_if_modified_since(struct client *cl, struct http_request *req, struct stat *s) -{ - char *hdr = uh_file_header_lookup(req, "If-Modified-Since"); - - if( hdr ) - { - if( uh_file_date2unix(hdr) < s->st_mtime ) - { - return 1; - } - else - { - uh_file_response_304(cl, req, s); - return 0; - } - } - - return 1; -} - -static int uh_file_if_none_match(struct client *cl, struct http_request *req, struct stat *s) -{ - const char *tag = uh_file_mktag(s); - char *hdr = uh_file_header_lookup(req, "If-None-Match"); - char *p; - int i; - - if( hdr ) - { - p = &hdr[0]; - - for( i = 0; i < strlen(hdr); i++ ) - { - if( (hdr[i] == ' ') || (hdr[i] == ',') ) - { - hdr[i++] = 0; - p = &hdr[i]; - } - else if( !strcmp(p, "*") || !strcmp(p, tag) ) - { - if( (req->method == UH_HTTP_MSG_GET) || - (req->method == UH_HTTP_MSG_HEAD) ) - uh_file_response_304(cl, req, s); - else - uh_file_response_412(cl, req); - - return 0; - } - } - } - - return 1; -} - -static int uh_file_if_range(struct client *cl, struct http_request *req, struct stat *s) -{ - char *hdr = uh_file_header_lookup(req, "If-Range"); - - if( hdr ) - { - uh_file_response_412(cl, req); - return 0; - } - - return 1; -} - -static int uh_file_if_unmodified_since(struct client *cl, struct http_request *req, struct stat *s) -{ - char *hdr = uh_file_header_lookup(req, "If-Unmodified-Since"); - - if( hdr ) - { - if( uh_file_date2unix(hdr) <= s->st_mtime ) - { - uh_file_response_412(cl, req); - return 0; - } - } - - return 1; -} - - -static int uh_file_scandir_filter_dir(const struct dirent *e) -{ - return strcmp(e->d_name, ".") ? 1 : 0; -} - -static void uh_file_dirlist(struct client *cl, struct http_request *req, struct path_info *pi) -{ - int i, count; - char filename[PATH_MAX]; - char *pathptr; - struct dirent **files = NULL; - struct stat s; - - uh_http_sendf(cl, req, - "<html><head><title>Index of %s</title></head>" - "<body><h1>Index of %s</h1><hr /><ol>", - pi->name, pi->name - ); - - if( (count = scandir(pi->phys, &files, uh_file_scandir_filter_dir, alphasort)) > 0 ) - { - memset(filename, 0, sizeof(filename)); - memcpy(filename, pi->phys, sizeof(filename)); - pathptr = &filename[strlen(filename)]; - - /* list subdirs */ - for( i = 0; i < count; i++ ) - { - strncat(filename, files[i]->d_name, - sizeof(filename) - strlen(files[i]->d_name)); - - if( !stat(filename, &s) && (s.st_mode & S_IFDIR) ) - uh_http_sendf(cl, req, - "<li><strong><a href='%s%s'>%s</a>/</strong><br />" - "<small>modified: %s<br />directory - %.02f kbyte" - "<br /><br /></small></li>", - pi->name, files[i]->d_name, files[i]->d_name, - uh_file_unix2date(s.st_mtime), s.st_size / 1024.0 - ); - - *pathptr = 0; - } - - /* list files */ - for( i = 0; i < count; i++ ) - { - strncat(filename, files[i]->d_name, - sizeof(filename) - strlen(files[i]->d_name)); - - if( !stat(filename, &s) && !(s.st_mode & S_IFDIR) ) - uh_http_sendf(cl, req, - "<li><strong><a href='%s%s'>%s</a></strong><br />" - "<small>modified: %s<br />%s - %.02f kbyte<br />" - "<br /></small></li>", - pi->name, files[i]->d_name, files[i]->d_name, - uh_file_unix2date(s.st_mtime), - uh_file_mime_lookup(filename), s.st_size / 1024.0 - ); - - *pathptr = 0; - free(files[i]); - } - } - - free(files); - - uh_http_sendf(cl, req, "</ol><hr /></body></html>"); - uh_http_sendf(cl, req, ""); -} - - -void uh_file_request(struct client *cl, struct http_request *req, struct path_info *pi) -{ - int fd, rlen; - char buf[UH_LIMIT_MSGHEAD]; - - /* we have a file */ - if( (pi->stat.st_mode & S_IFREG) && ((fd = open(pi->phys, O_RDONLY)) > 0) ) - { - /* test preconditions */ - if( - uh_file_if_modified_since(cl, req, &pi->stat) && - uh_file_if_match(cl, req, &pi->stat) && - uh_file_if_range(cl, req, &pi->stat) && - uh_file_if_unmodified_since(cl, req, &pi->stat) && - uh_file_if_none_match(cl, req, &pi->stat) - ) { - /* write status */ - uh_file_response_200(cl, req, &pi->stat); - - uh_http_sendf(cl, NULL, "Content-Type: %s\r\n", uh_file_mime_lookup(pi->name)); - uh_http_sendf(cl, NULL, "Content-Length: %i\r\n", pi->stat.st_size); - - /* if request was HTTP 1.1 we'll respond chunked */ - if( (req->version > 1.0) && (req->method != UH_HTTP_MSG_HEAD) ) - uh_http_send(cl, NULL, "Transfer-Encoding: chunked\r\n", -1); - - /* close header */ - uh_http_send(cl, NULL, "\r\n", -1); - - /* send body */ - if( req->method != UH_HTTP_MSG_HEAD ) - { - /* pump file data */ - while( (rlen = read(fd, buf, sizeof(buf))) > 0 ) - { - if( uh_http_send(cl, req, buf, rlen) < 0 ) - break; - } - - /* send trailer in chunked mode */ - uh_http_send(cl, req, "", 0); - } - } - - /* one of the preconditions failed, terminate opened header and exit */ - else - { - uh_http_send(cl, NULL, "\r\n", -1); - } - - close(fd); - } - - /* directory */ - else if( pi->stat.st_mode & S_IFDIR ) - { - /* write status */ - uh_file_response_200(cl, req, NULL); - - if( req->version > 1.0 ) - uh_http_send(cl, NULL, "Transfer-Encoding: chunked\r\n", -1); - - uh_http_send(cl, NULL, "Content-Type: text/html\r\n\r\n", -1); - - /* content */ - uh_file_dirlist(cl, req, pi); - } - - /* 403 */ - else - { - uh_http_sendhf(cl, 403, "Forbidden", - "Access to this resource is forbidden"); - } -} - |