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