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/*
* Copyright (c) 2021, 2022, 2023 Omar Polo <op@omarpolo.com>
*
* 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 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 "gmid.h"
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include "log.h"
void
init_mime(struct mime *mime)
{
mime->len = 0;
mime->cap = 16;
mime->t = calloc(mime->cap, sizeof(struct etm));
if (mime->t == NULL)
fatal("calloc");
}
/* register mime for the given extension */
int
add_mime(struct mime *mime, const char *mt, const char *ext)
{
struct etm *t;
size_t newcap;
if (mime->len == mime->cap) {
newcap = mime->cap * 1.5;
t = recallocarray(mime->t, mime->cap, newcap,
sizeof(struct etm));
if (t == NULL)
return -1;
mime->t = t;
mime->cap = newcap;
}
t = &mime->t[mime->len];
if (strlcpy(t->mime, mt, sizeof(t->mime)) >= sizeof(t->mime))
return -1;
if (strlcpy(t->ext, ext, sizeof(t->ext)) >= sizeof(t->ext))
return -1;
mime->len++;
return 0;
}
/* load a default set of common mime-extension associations */
int
load_default_mime(struct mime *mime)
{
const struct mapping {
const char *mime;
const char *ext;
} m[] = {
{"application/pdf", "pdf"},
{"image/gif", "gif"},
{"image/jpeg", "jpg"},
{"image/jpeg", "jpeg"},
{"image/png", "png"},
{"image/svg+xml", "svg"},
{"text/gemini", "gemini"},
{"text/gemini", "gmi"},
{"text/markdown", "markdown"},
{"text/markdown", "md"},
{"text/plain", "txt"},
{"text/x-patch", "diff"},
{"text/x-patch", "patch"},
{"text/xml", "xml"},
{NULL, NULL}
}, *i;
/* don't load the default if `types' was used. */
if (mime->len != 0)
return 0;
for (i = m; i->mime != NULL; ++i) {
if (add_mime(mime, i->mime, i->ext) == -1)
return -1;
}
return 0;
}
static const char *
path_ext(const char *path)
{
const char *end;
end = path + strlen(path)-1;
for (; end != path; --end) {
if (*end == '.')
return end+1;
if (*end == '/')
break;
}
return NULL;
}
static int
mime_comp(const void *a, const void *b)
{
const struct etm *x = a, *y = b;
return strcmp(x->ext, y->ext);
}
void
sort_mime(struct mime *m)
{
qsort(m->t, m->len, sizeof(*m->t), mime_comp);
}
static int
mime_find(const void *a, const void *b)
{
const char *ext = a;
const struct etm *x = b;
return strcmp(ext, x->ext);
}
const char *
mime(struct conf *conf, struct vhost *host, const char *path)
{
const char *def, *ext;
struct etm *t;
def = vhost_default_mime(host, path);
if ((ext = path_ext(path)) == NULL)
return def;
t = bsearch(ext, conf->mime.t, conf->mime.len, sizeof(*conf->mime.t),
mime_find);
if (t != NULL)
return t->mime;
if (!strcmp(ext, "gmi") || !strcmp(ext, "gemini"))
return "text/gemini";
return def;
}
void
free_mime(struct mime *m)
{
free(m->t);
}
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