1 0fbe79b3 2021-01-18 op /*
  2 0fbe79b3 2021-01-18 op  * Copyright (c) 2021 Omar Polo <op@omarpolo.com>
  3 0fbe79b3 2021-01-18 op  *
  4 0fbe79b3 2021-01-18 op  * Permission to use, copy, modify, and distribute this software for any
  5 0fbe79b3 2021-01-18 op  * purpose with or without fee is hereby granted, provided that the above
  6 0fbe79b3 2021-01-18 op  * copyright notice and this permission notice appear in all copies.
  7 0fbe79b3 2021-01-18 op  *
  8 0fbe79b3 2021-01-18 op  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  9 0fbe79b3 2021-01-18 op  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 10 0fbe79b3 2021-01-18 op  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 11 0fbe79b3 2021-01-18 op  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 12 0fbe79b3 2021-01-18 op  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 13 0fbe79b3 2021-01-18 op  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 14 0fbe79b3 2021-01-18 op  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 15 0fbe79b3 2021-01-18 op  */
 16 0fbe79b3 2021-01-18 op 
 17 0fbe79b3 2021-01-18 op #include <errno.h>
 18 0fbe79b3 2021-01-18 op #include <stdlib.h>
 19 0fbe79b3 2021-01-18 op #include <string.h>
 20 0fbe79b3 2021-01-18 op 
 21 0fbe79b3 2021-01-18 op #include "gmid.h"
 22 0fbe79b3 2021-01-18 op 
 23 0fbe79b3 2021-01-18 op void
 24 b2a6b613 2021-01-21 op init_mime(struct mime *mime)
 25 0fbe79b3 2021-01-18 op {
 26 b2a6b613 2021-01-21 op 	mime->len = 0;
 27 b2a6b613 2021-01-21 op 	mime->cap = 16;
 28 0fbe79b3 2021-01-18 op 
 29 b2a6b613 2021-01-21 op 	mime->t = calloc(mime->cap, sizeof(struct etm));
 30 b2a6b613 2021-01-21 op 	if (mime->t == NULL)
 31 0fbe79b3 2021-01-18 op 		fatal("calloc: %s", strerror(errno));
 32 0fbe79b3 2021-01-18 op }
 33 0fbe79b3 2021-01-18 op 
 34 0fbe79b3 2021-01-18 op /* register mime for the given extension */
 35 0fbe79b3 2021-01-18 op void
 36 b2a6b613 2021-01-21 op add_mime(struct mime *mime, const char *mt, const char *ext)
 37 0fbe79b3 2021-01-18 op {
 38 b2a6b613 2021-01-21 op 	if (mime->len == mime->cap) {
 39 b2a6b613 2021-01-21 op 		mime->cap *= 1.5;
 40 b2a6b613 2021-01-21 op 		mime->t = realloc(mime->t, mime->cap * sizeof(struct etm));
 41 b2a6b613 2021-01-21 op 		if (mime->t == NULL)
 42 0fbe79b3 2021-01-18 op 			fatal("realloc: %s", strerror(errno));
 43 0fbe79b3 2021-01-18 op 	}
 44 0fbe79b3 2021-01-18 op 
 45 b2a6b613 2021-01-21 op 	mime->t[mime->len].mime = mt;
 46 b2a6b613 2021-01-21 op 	mime->t[mime->len].ext  = ext;
 47 b2a6b613 2021-01-21 op 	mime->len++;
 48 0fbe79b3 2021-01-18 op }
 49 0fbe79b3 2021-01-18 op 
 50 0fbe79b3 2021-01-18 op /* load a default set of common mime-extension associations */
 51 0fbe79b3 2021-01-18 op void
 52 b2a6b613 2021-01-21 op load_default_mime(struct mime *mime)
 53 0fbe79b3 2021-01-18 op {
 54 0fbe79b3 2021-01-18 op 	struct etm *i, m[] = {
 55 0fbe79b3 2021-01-18 op 		{"application/pdf",	"pdf"},
 56 0fbe79b3 2021-01-18 op 		{"image/gif",		"gif"},
 57 0fbe79b3 2021-01-18 op 		{"image/jpeg",		"jpg"},
 58 0fbe79b3 2021-01-18 op 		{"image/jpeg",		"jpeg"},
 59 0fbe79b3 2021-01-18 op 		{"image/png",		"png"},
 60 0fbe79b3 2021-01-18 op 		{"image/svg+xml",	"svg"},
 61 0fbe79b3 2021-01-18 op 		{"text/gemini",		"gemini"},
 62 0fbe79b3 2021-01-18 op 		{"text/gemini",		"gmi"},
 63 0fbe79b3 2021-01-18 op 		{"text/markdown",	"markdown"},
 64 0fbe79b3 2021-01-18 op 		{"text/markdown",	"md"},
 65 0fbe79b3 2021-01-18 op 		{"text/plain",		"txt"},
 66 0fbe79b3 2021-01-18 op 		{"text/xml",		"xml"},
 67 0fbe79b3 2021-01-18 op 		{NULL, NULL}
 68 0fbe79b3 2021-01-18 op 	};
 69 0fbe79b3 2021-01-18 op 
 70 0fbe79b3 2021-01-18 op 	for (i = m; i->mime != NULL; ++i)
 71 b2a6b613 2021-01-21 op 		add_mime(mime, i->mime, i->ext);
 72 0fbe79b3 2021-01-18 op }
 73 0fbe79b3 2021-01-18 op 
 74 0fbe79b3 2021-01-18 op static const char *
 75 0fbe79b3 2021-01-18 op path_ext(const char *path)
 76 0fbe79b3 2021-01-18 op {
 77 0fbe79b3 2021-01-18 op 	const char *end;
 78 0fbe79b3 2021-01-18 op 
 79 0fbe79b3 2021-01-18 op 	end = path + strlen(path)-1;
 80 0fbe79b3 2021-01-18 op 	for (; end != path; --end) {
 81 0fbe79b3 2021-01-18 op 		if (*end == '.')
 82 0fbe79b3 2021-01-18 op 			return end+1;
 83 0fbe79b3 2021-01-18 op 		if (*end == '/')
 84 0fbe79b3 2021-01-18 op 			break;
 85 0fbe79b3 2021-01-18 op 	}
 86 0fbe79b3 2021-01-18 op 
 87 0fbe79b3 2021-01-18 op 	return NULL;
 88 0fbe79b3 2021-01-18 op }
 89 0fbe79b3 2021-01-18 op 
 90 0fbe79b3 2021-01-18 op const char *
 91 6119e13e 2021-01-19 op mime(struct vhost *host, const char *path)
 92 0fbe79b3 2021-01-18 op {
 93 6119e13e 2021-01-19 op 	const char *def, *ext;
 94 0fbe79b3 2021-01-18 op 	struct etm *t;
 95 0fbe79b3 2021-01-18 op 
 96 6119e13e 2021-01-19 op 	if ((def = host->default_mime) == NULL)
 97 6119e13e 2021-01-19 op 		def = "application/octet-stream";
 98 6119e13e 2021-01-19 op 
 99 0fbe79b3 2021-01-18 op 	if ((ext = path_ext(path)) == NULL)
100 6119e13e 2021-01-19 op 		return def;
101 0fbe79b3 2021-01-18 op 
102 b2a6b613 2021-01-21 op 	for (t = conf.mime.t; t->mime != NULL; ++t)
103 0fbe79b3 2021-01-18 op 		if (!strcmp(ext, t->ext))
104 0fbe79b3 2021-01-18 op 			return t->mime;
105 0fbe79b3 2021-01-18 op 
106 6119e13e 2021-01-19 op 	return def;
107 0fbe79b3 2021-01-18 op }