1 /*
2 * Copyright (C) the libgit2 contributors. All rights reserved.
3 *
4 * This file is part of libgit2, distributed under the GNU GPL v2 with
5 * a Linking Exception. For full terms see the included COPYING file.
6 */
7
8 #include "common.h"
9
10 #ifdef GIT_OPENSSL
11 # include <openssl/err.h>
12 #endif
13
14 #ifdef GIT_MBEDTLS
15 # include <mbedtls/error.h>
16 #endif
17
18 #include <git2.h>
19 #include "alloc.h"
20 #include "sysdir.h"
21 #include "cache.h"
22 #include "global.h"
23 #include "object.h"
24 #include "odb.h"
25 #include "refs.h"
26 #include "index.h"
27 #include "transports/smart.h"
28 #include "transports/http.h"
29 #include "streams/openssl.h"
30 #include "streams/mbedtls.h"
31
git_libgit2_version(int * major,int * minor,int * rev)32 int git_libgit2_version(int *major, int *minor, int *rev)
33 {
34 *major = LIBGIT2_VER_MAJOR;
35 *minor = LIBGIT2_VER_MINOR;
36 *rev = LIBGIT2_VER_REVISION;
37
38 return 0;
39 }
40
git_libgit2_features(void)41 int git_libgit2_features(void)
42 {
43 return 0
44 #ifdef GIT_THREADS
45 | GIT_FEATURE_THREADS
46 #endif
47 #ifdef GIT_HTTPS
48 | GIT_FEATURE_HTTPS
49 #endif
50 #if defined(GIT_SSH)
51 | GIT_FEATURE_SSH
52 #endif
53 #if defined(GIT_USE_NSEC)
54 | GIT_FEATURE_NSEC
55 #endif
56 ;
57 }
58
59 /* Declarations for tuneable settings */
60 extern size_t git_mwindow__window_size;
61 extern size_t git_mwindow__mapped_limit;
62 extern size_t git_indexer__max_objects;
63 extern bool git_disable_pack_keep_file_checks;
64
config_level_to_sysdir(int config_level)65 static int config_level_to_sysdir(int config_level)
66 {
67 int val = -1;
68
69 switch (config_level) {
70 case GIT_CONFIG_LEVEL_SYSTEM:
71 val = GIT_SYSDIR_SYSTEM;
72 break;
73 case GIT_CONFIG_LEVEL_XDG:
74 val = GIT_SYSDIR_XDG;
75 break;
76 case GIT_CONFIG_LEVEL_GLOBAL:
77 val = GIT_SYSDIR_GLOBAL;
78 break;
79 case GIT_CONFIG_LEVEL_PROGRAMDATA:
80 val = GIT_SYSDIR_PROGRAMDATA;
81 break;
82 default:
83 git_error_set(
84 GIT_ERROR_INVALID, "invalid config path selector %d", config_level);
85 }
86
87 return val;
88 }
89
90 extern char *git__user_agent;
91 extern char *git__ssl_ciphers;
92
git_libgit2__user_agent(void)93 const char *git_libgit2__user_agent(void)
94 {
95 return git__user_agent;
96 }
97
git_libgit2__ssl_ciphers(void)98 const char *git_libgit2__ssl_ciphers(void)
99 {
100 return git__ssl_ciphers;
101 }
102
git_libgit2_opts(int key,...)103 int git_libgit2_opts(int key, ...)
104 {
105 int error = 0;
106 va_list ap;
107
108 va_start(ap, key);
109
110 switch (key) {
111 case GIT_OPT_SET_MWINDOW_SIZE:
112 git_mwindow__window_size = va_arg(ap, size_t);
113 break;
114
115 case GIT_OPT_GET_MWINDOW_SIZE:
116 *(va_arg(ap, size_t *)) = git_mwindow__window_size;
117 break;
118
119 case GIT_OPT_SET_MWINDOW_MAPPED_LIMIT:
120 git_mwindow__mapped_limit = va_arg(ap, size_t);
121 break;
122
123 case GIT_OPT_GET_MWINDOW_MAPPED_LIMIT:
124 *(va_arg(ap, size_t *)) = git_mwindow__mapped_limit;
125 break;
126
127 case GIT_OPT_GET_SEARCH_PATH:
128 if ((error = config_level_to_sysdir(va_arg(ap, int))) >= 0) {
129 git_buf *out = va_arg(ap, git_buf *);
130 const git_buf *tmp;
131
132 git_buf_sanitize(out);
133 if ((error = git_sysdir_get(&tmp, error)) < 0)
134 break;
135
136 error = git_buf_sets(out, tmp->ptr);
137 }
138 break;
139
140 case GIT_OPT_SET_SEARCH_PATH:
141 if ((error = config_level_to_sysdir(va_arg(ap, int))) >= 0)
142 error = git_sysdir_set(error, va_arg(ap, const char *));
143 break;
144
145 case GIT_OPT_SET_CACHE_OBJECT_LIMIT:
146 {
147 git_object_t type = (git_object_t)va_arg(ap, int);
148 size_t size = va_arg(ap, size_t);
149 error = git_cache_set_max_object_size(type, size);
150 break;
151 }
152
153 case GIT_OPT_SET_CACHE_MAX_SIZE:
154 git_cache__max_storage = va_arg(ap, ssize_t);
155 break;
156
157 case GIT_OPT_ENABLE_CACHING:
158 git_cache__enabled = (va_arg(ap, int) != 0);
159 break;
160
161 case GIT_OPT_GET_CACHED_MEMORY:
162 *(va_arg(ap, ssize_t *)) = git_cache__current_storage.val;
163 *(va_arg(ap, ssize_t *)) = git_cache__max_storage;
164 break;
165
166 case GIT_OPT_GET_TEMPLATE_PATH:
167 {
168 git_buf *out = va_arg(ap, git_buf *);
169 const git_buf *tmp;
170
171 git_buf_sanitize(out);
172 if ((error = git_sysdir_get(&tmp, GIT_SYSDIR_TEMPLATE)) < 0)
173 break;
174
175 error = git_buf_sets(out, tmp->ptr);
176 }
177 break;
178
179 case GIT_OPT_SET_TEMPLATE_PATH:
180 error = git_sysdir_set(GIT_SYSDIR_TEMPLATE, va_arg(ap, const char *));
181 break;
182
183 case GIT_OPT_SET_SSL_CERT_LOCATIONS:
184 #ifdef GIT_OPENSSL
185 {
186 const char *file = va_arg(ap, const char *);
187 const char *path = va_arg(ap, const char *);
188 error = git_openssl__set_cert_location(file, path);
189 }
190 #elif defined(GIT_MBEDTLS)
191 {
192 const char *file = va_arg(ap, const char *);
193 const char *path = va_arg(ap, const char *);
194 if (file)
195 error = git_mbedtls__set_cert_location(file, 0);
196 if (error && path)
197 error = git_mbedtls__set_cert_location(path, 1);
198 }
199 #else
200 git_error_set(GIT_ERROR_SSL, "TLS backend doesn't support certificate locations");
201 error = -1;
202 #endif
203 break;
204 case GIT_OPT_SET_USER_AGENT:
205 git__free(git__user_agent);
206 git__user_agent = git__strdup(va_arg(ap, const char *));
207 if (!git__user_agent) {
208 git_error_set_oom();
209 error = -1;
210 }
211
212 break;
213
214 case GIT_OPT_ENABLE_STRICT_OBJECT_CREATION:
215 git_object__strict_input_validation = (va_arg(ap, int) != 0);
216 break;
217
218 case GIT_OPT_ENABLE_STRICT_SYMBOLIC_REF_CREATION:
219 git_reference__enable_symbolic_ref_target_validation = (va_arg(ap, int) != 0);
220 break;
221
222 case GIT_OPT_SET_SSL_CIPHERS:
223 #if (GIT_OPENSSL || GIT_MBEDTLS)
224 {
225 git__free(git__ssl_ciphers);
226 git__ssl_ciphers = git__strdup(va_arg(ap, const char *));
227 if (!git__ssl_ciphers) {
228 git_error_set_oom();
229 error = -1;
230 }
231 }
232 #else
233 git_error_set(GIT_ERROR_SSL, "TLS backend doesn't support custom ciphers");
234 error = -1;
235 #endif
236 break;
237
238 case GIT_OPT_GET_USER_AGENT:
239 {
240 git_buf *out = va_arg(ap, git_buf *);
241 git_buf_sanitize(out);
242 error = git_buf_sets(out, git__user_agent);
243 }
244 break;
245
246 case GIT_OPT_ENABLE_OFS_DELTA:
247 git_smart__ofs_delta_enabled = (va_arg(ap, int) != 0);
248 break;
249
250 case GIT_OPT_ENABLE_FSYNC_GITDIR:
251 git_repository__fsync_gitdir = (va_arg(ap, int) != 0);
252 break;
253
254 case GIT_OPT_GET_WINDOWS_SHAREMODE:
255 #ifdef GIT_WIN32
256 *(va_arg(ap, unsigned long *)) = git_win32__createfile_sharemode;
257 #endif
258 break;
259
260 case GIT_OPT_SET_WINDOWS_SHAREMODE:
261 #ifdef GIT_WIN32
262 git_win32__createfile_sharemode = va_arg(ap, unsigned long);
263 #endif
264 break;
265
266 case GIT_OPT_ENABLE_STRICT_HASH_VERIFICATION:
267 git_odb__strict_hash_verification = (va_arg(ap, int) != 0);
268 break;
269
270 case GIT_OPT_SET_ALLOCATOR:
271 error = git_allocator_setup(va_arg(ap, git_allocator *));
272 break;
273
274 case GIT_OPT_ENABLE_UNSAVED_INDEX_SAFETY:
275 git_index__enforce_unsaved_safety = (va_arg(ap, int) != 0);
276 break;
277
278 case GIT_OPT_SET_PACK_MAX_OBJECTS:
279 git_indexer__max_objects = va_arg(ap, size_t);
280 break;
281
282 case GIT_OPT_GET_PACK_MAX_OBJECTS:
283 *(va_arg(ap, size_t *)) = git_indexer__max_objects;
284 break;
285
286 case GIT_OPT_DISABLE_PACK_KEEP_FILE_CHECKS:
287 git_disable_pack_keep_file_checks = (va_arg(ap, int) != 0);
288 break;
289
290 case GIT_OPT_ENABLE_HTTP_EXPECT_CONTINUE:
291 git_http__expect_continue = (va_arg(ap, int) != 0);
292 break;
293
294 default:
295 git_error_set(GIT_ERROR_INVALID, "invalid option key");
296 error = -1;
297 }
298
299 va_end(ap);
300
301 return error;
302 }
303