]> the.earth.li Git - onak.git/blob - hashquery.c
Make wotsap ignore revoked keys
[onak.git] / hashquery.c
1 /*
2  * hashquery.c - CGI to handle SKS style /pks/hashquery requests
3  *
4  * Copyright 2011 Jonathan McDowell <noodles@earth.li>
5  *
6  * This program is free software: you can redistribute it and/or modify it
7  * under the terms of the GNU General Public License as published by the Free
8  * Software Foundation; version 2 of the License.
9  *
10  * This program is distributed in the hope that it will be useful, but WITHOUT
11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13  * more details.
14  *
15  * You should have received a copy of the GNU General Public License along with
16  * this program; if not, write to the Free Software Foundation, Inc., 51
17  * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18  */
19
20 #include <stdio.h>
21 #include <stdlib.h>
22 #include <string.h>
23 #include <stdint.h>
24 #include <unistd.h>
25
26 #include "charfuncs.h"
27 #include "cleanup.h"
28 #include "keyid.h"
29 #include "log.h"
30 #include "marshal.h"
31 #include "mem.h"
32 #include "onak-conf.h"
33
34 void doerror(char *error)
35 {
36         printf("Content-Type: text/plain\n\n");
37         printf("%s", error);
38         cleanuplogthing();
39         cleanupconfig();
40         exit(EXIT_FAILURE);
41 }
42
43 int main(int argc, char *argv[])
44 {
45         char *request_method;
46         int count, found, i;
47         uint8_t **hashes;
48         struct buffer_ctx cgipostbuf;
49         struct openpgp_publickey **keys;
50
51         readconfig(NULL);
52         initlogthing("hashquery", config.logfile);
53
54         request_method = getenv("REQUEST_METHOD");
55         if (request_method == NULL || strcmp(request_method, "POST") != 0) {
56                 doerror("hashquery must be a HTTP POST request.\n");
57         }
58
59         if (!(cgipostbuf.size = atoi(getenv("CONTENT_LENGTH")))) {
60                 doerror("Must provide a content length.\n");
61         }
62
63         cgipostbuf.offset = 0;
64         cgipostbuf.buffer = malloc(cgipostbuf.size);
65         if (cgipostbuf.buffer == NULL) {
66                 doerror("Couldn't allocate memory for query content.\n");
67         }
68
69         if (!fread(cgipostbuf.buffer, cgipostbuf.size, 1, stdin)) {
70                 doerror("Couldn't read query.\n");
71         }
72
73         hashes = (uint8_t **) unmarshal_array(buffer_fetchchar, &cgipostbuf,
74                         (void * (*)(int (*)(void *, size_t,  void *), void *))
75                                 unmarshal_skshash, &count);
76
77         free(cgipostbuf.buffer);
78         cgipostbuf.buffer = NULL;
79         cgipostbuf.size = cgipostbuf.offset = 0;
80
81         if (hashes == NULL) {
82                 doerror("No hashes supplied.\n");
83         }
84
85         found = 0;
86         keys = calloc(sizeof(struct openpgp_publickey *), count);
87         if (keys == NULL) {
88                 doerror("Couldn't allocate memory for reply.\n");
89         }
90
91         if (config.dbbackend->fetch_key_skshash == NULL) {
92                 doerror("Can't fetch by skshash with this backend.");
93         }
94
95         catchsignals();
96         config.dbbackend->initdb(false);
97
98         for (i = 0; i < count; i++) {
99                 config.dbbackend->fetch_key_skshash(
100                                 (struct skshash *) hashes[i], &keys[found]);
101                 if (keys[found] != NULL) {
102                         found++;
103                 }
104                 free(hashes[i]);
105                 hashes[i] = NULL;
106         }
107         free(hashes);
108         hashes = NULL;
109
110         config.dbbackend->cleanupdb();
111
112         puts("Content-Type: pgp/keys\n");
113         marshal_array(stdout_putchar, NULL,
114                         (void (*)(int (*)(void *, size_t,  void *),
115                                         void *, const void *))
116                                 marshal_publickey, (void **) keys, found);
117         printf("\n");
118
119         for (i = 0; i < found; i++) {
120                 free_publickey(keys[i]);
121         }
122         free(keys);
123
124         cleanuplogthing();
125         cleanupconfig();
126 }