Commit | Line | Data |
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01b2ebce FT |
1 | /* |
2 | ashd - A Sane HTTP Daemon | |
3 | Copyright (C) 2008 Fredrik Tolf <fredrik@dolda2000.com> | |
4 | ||
5 | This program is free software: you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation, either version 3 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. | |
17 | */ | |
18 | ||
19 | #include <stdlib.h> | |
20 | #include <string.h> | |
21 | #include <stdio.h> | |
22 | #include <unistd.h> | |
23 | #include <fcntl.h> | |
24 | #include <errno.h> | |
25 | #include <sys/stat.h> | |
26 | #include <stdint.h> | |
b4164ce6 | 27 | #include <time.h> |
8f728a25 | 28 | #include <magic.h> |
01b2ebce FT |
29 | |
30 | #ifdef HAVE_CONFIG_H | |
31 | #include <config.h> | |
32 | #endif | |
33 | #include <utils.h> | |
34 | #include <log.h> | |
35 | #include <resp.h> | |
36 | ||
0328ac04 FT |
37 | #ifdef HAVE_XATTR |
38 | #include <attr/xattr.h> | |
39 | #endif | |
40 | ||
8f728a25 FT |
41 | static magic_t cookie = NULL; |
42 | ||
01b2ebce FT |
43 | static void passdata(int in, int out) |
44 | { | |
45 | int ret, len, off; | |
46 | char *buf; | |
47 | ||
48 | buf = smalloc(65536); | |
49 | while(1) { | |
50 | len = read(in, buf, 65536); | |
51 | if(len < 0) { | |
52 | flog(LOG_ERR, "sendfile: could not read input: %s", strerror(errno)); | |
53 | break; | |
54 | } | |
55 | if(len == 0) | |
56 | break; | |
57 | for(off = 0; off < len; off += ret) { | |
58 | ret = write(out, buf + off, len - off); | |
59 | if(ret < 0) { | |
60 | flog(LOG_ERR, "sendfile: could not write output: %s", strerror(errno)); | |
61 | break; | |
62 | } | |
63 | } | |
64 | } | |
65 | free(buf); | |
66 | } | |
67 | ||
0328ac04 FT |
68 | static char *attrmimetype(char *file) |
69 | { | |
70 | #ifdef HAVE_XATTR | |
71 | static char buf[1024]; | |
72 | int i; | |
73 | ssize_t sz; | |
74 | ||
75 | if((sz = getxattr(file, "user.ash-mime-type", buf, sizeof(buf) - 1)) > 0) | |
76 | goto found; | |
77 | if((sz = getxattr(file, "user.mime-type", buf, sizeof(buf) - 1)) > 0) | |
78 | goto found; | |
79 | if((sz = getxattr(file, "user.mime_type", buf, sizeof(buf) - 1)) > 0) | |
80 | goto found; | |
81 | if((sz = getxattr(file, "user.Content-Type", buf, sizeof(buf) - 1)) > 0) | |
82 | goto found; | |
83 | return(NULL); | |
84 | found: | |
85 | for(i = 0; i < sz; i++) { | |
86 | if((buf[sz] < 32) || (buf[sz] >= 128)) | |
87 | return(NULL); | |
88 | } | |
89 | buf[sz] = 0; | |
90 | return(buf); | |
91 | #else | |
92 | return(NULL); | |
93 | #endif | |
94 | } | |
95 | ||
8f728a25 | 96 | static const char *getmimetype(char *file, struct stat *sb) |
01b2ebce | 97 | { |
8f728a25 FT |
98 | const char *ret; |
99 | ||
0328ac04 FT |
100 | if((ret = attrmimetype(file)) != NULL) |
101 | return(ret); | |
8f728a25 FT |
102 | if(cookie == NULL) { |
103 | cookie = magic_open(MAGIC_MIME_TYPE); | |
104 | magic_load(cookie, NULL); | |
105 | } | |
106 | if((ret = magic_file(cookie, file)) != NULL) | |
107 | return(ret); | |
01b2ebce FT |
108 | return("application/octet-stream"); |
109 | } | |
110 | ||
b4164ce6 FT |
111 | static void checkcache(char *file, struct stat *sb) |
112 | { | |
113 | char *hdr; | |
114 | ||
115 | if((hdr = getenv("REQ_IF_MODIFIED_SINCE")) != NULL) { | |
116 | if(parsehttpdate(hdr) < sb->st_mtime) | |
117 | return; | |
81cfca6c FT |
118 | printf("HTTP/1.1 304 Not Modified\n"); |
119 | printf("Date: %s\n", fmthttpdate(time(NULL))); | |
120 | printf("Content-Length: 0\n"); | |
121 | printf("\n"); | |
b4164ce6 FT |
122 | exit(0); |
123 | } | |
124 | } | |
125 | ||
289c63fc FT |
126 | static void usage(void) |
127 | { | |
128 | flog(LOG_ERR, "usage: sendfile [-c CONTENT-TYPE] METHOD URL REST"); | |
129 | } | |
130 | ||
01b2ebce FT |
131 | int main(int argc, char **argv) |
132 | { | |
289c63fc | 133 | int c; |
01b2ebce FT |
134 | char *file; |
135 | struct stat sb; | |
136 | int fd; | |
8f728a25 | 137 | const char *contype; |
01b2ebce | 138 | |
289c63fc FT |
139 | contype = NULL; |
140 | while((c = getopt(argc, argv, "c:")) >= 0) { | |
141 | switch(c) { | |
142 | case 'c': | |
143 | contype = optarg; | |
144 | break; | |
145 | default: | |
146 | usage(); | |
147 | exit(1); | |
148 | break; | |
149 | } | |
150 | } | |
151 | if(argc - optind < 3) { | |
152 | usage(); | |
01b2ebce FT |
153 | exit(1); |
154 | } | |
155 | if((file = getenv("REQ_X_ASH_FILE")) == NULL) { | |
156 | flog(LOG_ERR, "sendfile: needs to be called with the X-Ash-File header"); | |
157 | exit(1); | |
158 | } | |
289c63fc | 159 | if(*argv[optind + 2]) { |
01b2ebce FT |
160 | simpleerror(1, 404, "Not Found", "The requested URL has no corresponding resource."); |
161 | exit(0); | |
162 | } | |
163 | if(stat(file, &sb) || ((fd = open(file, O_RDONLY)) < 0)) { | |
164 | flog(LOG_ERR, "sendfile: could not stat input file %s: %s", file, strerror(errno)); | |
165 | simpleerror(1, 500, "Internal Error", "The server could not access its own data."); | |
166 | exit(1); | |
167 | } | |
289c63fc FT |
168 | if(contype == NULL) |
169 | contype = getmimetype(file, &sb); | |
01b2ebce | 170 | |
b4164ce6 FT |
171 | checkcache(file, &sb); |
172 | ||
81cfca6c FT |
173 | printf("HTTP/1.1 200 OK\n"); |
174 | printf("Content-Type: %s\n", contype); | |
175 | printf("Content-Length: %ji\n", (intmax_t)sb.st_size); | |
176 | printf("Last-Modified: %s\n", fmthttpdate(sb.st_mtime)); | |
177 | printf("Date: %s\n", fmthttpdate(time(NULL))); | |
178 | printf("\n"); | |
01b2ebce | 179 | fflush(stdout); |
289c63fc | 180 | if(strcasecmp(argv[optind], "head")) |
01b2ebce FT |
181 | passdata(fd, 1); |
182 | return(0); | |
183 | } |