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6eb7ed54 DB |
1 | #include <fcntl.h> |
2 | #include <unistd.h> | |
3 | #include <string.h> | |
4 | #include <stdlib.h> | |
5 | #include "cache.h" | |
6 | #include "commit.h" | |
7 | #include <errno.h> | |
8 | #include <stdio.h> | |
9 | ||
4250a5e5 DB |
10 | #include "pull.h" |
11 | ||
6eb7ed54 DB |
12 | #include <curl/curl.h> |
13 | #include <curl/easy.h> | |
14 | ||
15 | static CURL *curl; | |
16 | ||
17 | static char *base; | |
18 | ||
6eb7ed54 DB |
19 | static SHA_CTX c; |
20 | static z_stream stream; | |
21 | ||
22 | static int local; | |
23 | static int zret; | |
24 | ||
25 | static size_t fwrite_sha1_file(void *ptr, size_t eltsize, size_t nmemb, | |
26 | void *data) { | |
27 | char expn[4096]; | |
28 | size_t size = eltsize * nmemb; | |
29 | int posn = 0; | |
30 | do { | |
31 | ssize_t retval = write(local, ptr + posn, size - posn); | |
32 | if (retval < 0) | |
33 | return posn; | |
34 | posn += retval; | |
35 | } while (posn < size); | |
36 | ||
37 | stream.avail_in = size; | |
38 | stream.next_in = ptr; | |
39 | do { | |
40 | stream.next_out = expn; | |
41 | stream.avail_out = sizeof(expn); | |
42 | zret = inflate(&stream, Z_SYNC_FLUSH); | |
43 | SHA1_Update(&c, expn, sizeof(expn) - stream.avail_out); | |
44 | } while (stream.avail_in && zret == Z_OK); | |
45 | return size; | |
46 | } | |
47 | ||
4250a5e5 | 48 | int fetch(unsigned char *sha1) |
6eb7ed54 DB |
49 | { |
50 | char *hex = sha1_to_hex(sha1); | |
51 | char *filename = sha1_file_name(sha1); | |
52 | char real_sha1[20]; | |
53 | char *url; | |
54 | char *posn; | |
55 | ||
6eb7ed54 DB |
56 | local = open(filename, O_WRONLY | O_CREAT | O_EXCL, 0666); |
57 | ||
58 | if (local < 0) | |
59 | return error("Couldn't open %s\n", filename); | |
60 | ||
61 | memset(&stream, 0, sizeof(stream)); | |
62 | ||
63 | inflateInit(&stream); | |
64 | ||
65 | SHA1_Init(&c); | |
66 | ||
67 | curl_easy_setopt(curl, CURLOPT_FILE, NULL); | |
68 | curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file); | |
69 | ||
812666c8 | 70 | url = xmalloc(strlen(base) + 50); |
6eb7ed54 DB |
71 | strcpy(url, base); |
72 | posn = url + strlen(base); | |
73 | strcpy(posn, "objects/"); | |
74 | posn += 8; | |
75 | memcpy(posn, hex, 2); | |
76 | posn += 2; | |
77 | *(posn++) = '/'; | |
78 | strcpy(posn, hex + 2); | |
79 | ||
80 | curl_easy_setopt(curl, CURLOPT_URL, url); | |
81 | ||
82 | /*printf("Getting %s\n", hex);*/ | |
83 | ||
84 | if (curl_easy_perform(curl)) | |
85 | return error("Couldn't get %s for %s\n", url, hex); | |
86 | ||
87 | close(local); | |
88 | inflateEnd(&stream); | |
89 | SHA1_Final(real_sha1, &c); | |
90 | if (zret != Z_STREAM_END) { | |
91 | unlink(filename); | |
92 | return error("File %s (%s) corrupt\n", hex, url); | |
93 | } | |
94 | if (memcmp(sha1, real_sha1, 20)) { | |
95 | unlink(filename); | |
96 | return error("File %s has bad hash\n", hex); | |
97 | } | |
98 | ||
99 | return 0; | |
100 | } | |
101 | ||
6eb7ed54 DB |
102 | int main(int argc, char **argv) |
103 | { | |
104 | char *commit_id; | |
105 | char *url; | |
106 | int arg = 1; | |
6eb7ed54 DB |
107 | |
108 | while (arg < argc && argv[arg][0] == '-') { | |
109 | if (argv[arg][1] == 't') { | |
4250a5e5 | 110 | get_tree = 1; |
6eb7ed54 | 111 | } else if (argv[arg][1] == 'c') { |
4250a5e5 | 112 | get_history = 1; |
6eb7ed54 | 113 | } else if (argv[arg][1] == 'a') { |
4250a5e5 DB |
114 | get_all = 1; |
115 | get_tree = 1; | |
116 | get_history = 1; | |
6eb7ed54 DB |
117 | } |
118 | arg++; | |
119 | } | |
120 | if (argc < arg + 2) { | |
121 | usage("http-pull [-c] [-t] [-a] commit-id url"); | |
122 | return 1; | |
123 | } | |
124 | commit_id = argv[arg]; | |
125 | url = argv[arg + 1]; | |
126 | ||
6eb7ed54 DB |
127 | curl_global_init(CURL_GLOBAL_ALL); |
128 | ||
129 | curl = curl_easy_init(); | |
130 | ||
131 | base = url; | |
132 | ||
4250a5e5 | 133 | if (pull(commit_id)) |
6eb7ed54 DB |
134 | return 1; |
135 | ||
136 | curl_global_cleanup(); | |
137 | return 0; | |
138 | } |