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Commit | Line | Data |
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6eb7ed54 DB |
1 | #include "cache.h" |
2 | #include "commit.h" | |
6eb7ed54 | 3 | |
4250a5e5 DB |
4 | #include "pull.h" |
5 | ||
6eb7ed54 DB |
6 | #include <curl/curl.h> |
7 | #include <curl/easy.h> | |
8 | ||
9 | static CURL *curl; | |
10 | ||
11 | static char *base; | |
12 | ||
6eb7ed54 DB |
13 | static SHA_CTX c; |
14 | static z_stream stream; | |
15 | ||
16 | static int local; | |
17 | static int zret; | |
18 | ||
fa3e0655 DB |
19 | struct buffer |
20 | { | |
21 | size_t posn; | |
22 | size_t size; | |
23 | void *buffer; | |
24 | }; | |
25 | ||
26 | static size_t fwrite_buffer(void *ptr, size_t eltsize, size_t nmemb, | |
27 | struct buffer *buffer) { | |
28 | size_t size = eltsize * nmemb; | |
29 | if (size > buffer->size - buffer->posn) | |
30 | size = buffer->size - buffer->posn; | |
31 | memcpy(buffer->buffer + buffer->posn, ptr, size); | |
32 | buffer->posn += size; | |
33 | return size; | |
34 | } | |
35 | ||
6eb7ed54 DB |
36 | static size_t fwrite_sha1_file(void *ptr, size_t eltsize, size_t nmemb, |
37 | void *data) { | |
bf0f910d | 38 | unsigned char expn[4096]; |
6eb7ed54 DB |
39 | size_t size = eltsize * nmemb; |
40 | int posn = 0; | |
41 | do { | |
42 | ssize_t retval = write(local, ptr + posn, size - posn); | |
43 | if (retval < 0) | |
44 | return posn; | |
45 | posn += retval; | |
46 | } while (posn < size); | |
47 | ||
48 | stream.avail_in = size; | |
49 | stream.next_in = ptr; | |
50 | do { | |
51 | stream.next_out = expn; | |
52 | stream.avail_out = sizeof(expn); | |
53 | zret = inflate(&stream, Z_SYNC_FLUSH); | |
54 | SHA1_Update(&c, expn, sizeof(expn) - stream.avail_out); | |
55 | } while (stream.avail_in && zret == Z_OK); | |
56 | return size; | |
57 | } | |
58 | ||
4250a5e5 | 59 | int fetch(unsigned char *sha1) |
6eb7ed54 DB |
60 | { |
61 | char *hex = sha1_to_hex(sha1); | |
62 | char *filename = sha1_file_name(sha1); | |
bf0f910d | 63 | unsigned char real_sha1[20]; |
6eb7ed54 DB |
64 | char *url; |
65 | char *posn; | |
66 | ||
6eb7ed54 DB |
67 | local = open(filename, O_WRONLY | O_CREAT | O_EXCL, 0666); |
68 | ||
69 | if (local < 0) | |
70 | return error("Couldn't open %s\n", filename); | |
71 | ||
72 | memset(&stream, 0, sizeof(stream)); | |
73 | ||
74 | inflateInit(&stream); | |
75 | ||
76 | SHA1_Init(&c); | |
77 | ||
78 | curl_easy_setopt(curl, CURLOPT_FILE, NULL); | |
79 | curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file); | |
80 | ||
812666c8 | 81 | url = xmalloc(strlen(base) + 50); |
6eb7ed54 DB |
82 | strcpy(url, base); |
83 | posn = url + strlen(base); | |
84 | strcpy(posn, "objects/"); | |
85 | posn += 8; | |
86 | memcpy(posn, hex, 2); | |
87 | posn += 2; | |
88 | *(posn++) = '/'; | |
89 | strcpy(posn, hex + 2); | |
90 | ||
91 | curl_easy_setopt(curl, CURLOPT_URL, url); | |
92 | ||
6eb7ed54 DB |
93 | if (curl_easy_perform(curl)) |
94 | return error("Couldn't get %s for %s\n", url, hex); | |
95 | ||
96 | close(local); | |
97 | inflateEnd(&stream); | |
98 | SHA1_Final(real_sha1, &c); | |
99 | if (zret != Z_STREAM_END) { | |
100 | unlink(filename); | |
101 | return error("File %s (%s) corrupt\n", hex, url); | |
102 | } | |
103 | if (memcmp(sha1, real_sha1, 20)) { | |
104 | unlink(filename); | |
105 | return error("File %s has bad hash\n", hex); | |
106 | } | |
107 | ||
e78d9772 | 108 | pull_say("got %s\n", hex); |
6eb7ed54 DB |
109 | return 0; |
110 | } | |
111 | ||
cd541a68 DB |
112 | int fetch_ref(char *ref, unsigned char *sha1) |
113 | { | |
fa3e0655 DB |
114 | char *url, *posn; |
115 | char hex[42]; | |
116 | struct buffer buffer; | |
117 | buffer.size = 41; | |
118 | buffer.posn = 0; | |
119 | buffer.buffer = hex; | |
120 | hex[41] = '\0'; | |
121 | ||
122 | curl_easy_setopt(curl, CURLOPT_FILE, &buffer); | |
123 | curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite_buffer); | |
124 | ||
125 | url = xmalloc(strlen(base) + 6 + strlen(ref)); | |
126 | strcpy(url, base); | |
127 | posn = url + strlen(base); | |
128 | strcpy(posn, "refs/"); | |
129 | posn += 5; | |
130 | strcpy(posn, ref); | |
131 | ||
132 | curl_easy_setopt(curl, CURLOPT_URL, url); | |
133 | ||
134 | if (curl_easy_perform(curl)) | |
135 | return error("Couldn't get %s for %s\n", url, ref); | |
136 | ||
137 | hex[40] = '\0'; | |
138 | get_sha1_hex(hex, sha1); | |
139 | return 0; | |
cd541a68 DB |
140 | } |
141 | ||
6eb7ed54 DB |
142 | int main(int argc, char **argv) |
143 | { | |
144 | char *commit_id; | |
145 | char *url; | |
146 | int arg = 1; | |
6eb7ed54 DB |
147 | |
148 | while (arg < argc && argv[arg][0] == '-') { | |
149 | if (argv[arg][1] == 't') { | |
4250a5e5 | 150 | get_tree = 1; |
6eb7ed54 | 151 | } else if (argv[arg][1] == 'c') { |
4250a5e5 | 152 | get_history = 1; |
6eb7ed54 | 153 | } else if (argv[arg][1] == 'a') { |
4250a5e5 DB |
154 | get_all = 1; |
155 | get_tree = 1; | |
156 | get_history = 1; | |
e78d9772 JH |
157 | } else if (argv[arg][1] == 'v') { |
158 | get_verbosely = 1; | |
fa3e0655 DB |
159 | } else if (argv[arg][1] == 'w') { |
160 | write_ref = argv[arg + 1]; | |
161 | arg++; | |
6eb7ed54 DB |
162 | } |
163 | arg++; | |
164 | } | |
165 | if (argc < arg + 2) { | |
fa3e0655 | 166 | usage("git-http-pull [-c] [-t] [-a] [-d] [-v] [--recover] [-w ref] commit-id url"); |
6eb7ed54 DB |
167 | return 1; |
168 | } | |
169 | commit_id = argv[arg]; | |
170 | url = argv[arg + 1]; | |
171 | ||
6eb7ed54 DB |
172 | curl_global_init(CURL_GLOBAL_ALL); |
173 | ||
174 | curl = curl_easy_init(); | |
175 | ||
176 | base = url; | |
177 | ||
4250a5e5 | 178 | if (pull(commit_id)) |
6eb7ed54 DB |
179 | return 1; |
180 | ||
181 | curl_global_cleanup(); | |
182 | return 0; | |
183 | } |