]>
Commit | Line | Data |
---|---|---|
5579f44d | 1 | #include "git-compat-util.h" |
373d70ef | 2 | #include "config.h" |
32a8f510 | 3 | #include "environment.h" |
373d70ef | 4 | #include "protocol.h" |
74ea5c95 | 5 | #include "trace2.h" |
373d70ef BW |
6 | |
7 | static enum protocol_version parse_protocol_version(const char *value) | |
8 | { | |
9 | if (!strcmp(value, "0")) | |
10 | return protocol_v0; | |
11 | else if (!strcmp(value, "1")) | |
12 | return protocol_v1; | |
8f6982b4 BW |
13 | else if (!strcmp(value, "2")) |
14 | return protocol_v2; | |
373d70ef BW |
15 | else |
16 | return protocol_unknown_version; | |
17 | } | |
18 | ||
19 | enum protocol_version get_protocol_version_config(void) | |
20 | { | |
21 | const char *value; | |
8cbeba06 | 22 | const char *git_test_k = "GIT_TEST_PROTOCOL_VERSION"; |
33166f3a | 23 | const char *git_test_v; |
8cbeba06 | 24 | |
f1de981e | 25 | if (!git_config_get_string_tmp("protocol.version", &value)) { |
373d70ef BW |
26 | enum protocol_version version = parse_protocol_version(value); |
27 | ||
28 | if (version == protocol_unknown_version) | |
29 | die("unknown value for config 'protocol.version': %s", | |
30 | value); | |
31 | ||
33166f3a | 32 | return version; |
8cbeba06 JT |
33 | } |
34 | ||
33166f3a | 35 | git_test_v = getenv(git_test_k); |
8cbeba06 JT |
36 | if (git_test_v && *git_test_v) { |
37 | enum protocol_version env = parse_protocol_version(git_test_v); | |
38 | ||
39 | if (env == protocol_unknown_version) | |
40 | die("unknown value for %s: %s", git_test_k, git_test_v); | |
33166f3a | 41 | return env; |
373d70ef BW |
42 | } |
43 | ||
eb049759 | 44 | return protocol_v2; |
373d70ef BW |
45 | } |
46 | ||
47 | enum protocol_version determine_protocol_version_server(void) | |
48 | { | |
49 | const char *git_protocol = getenv(GIT_PROTOCOL_ENVIRONMENT); | |
50 | enum protocol_version version = protocol_v0; | |
51 | ||
52 | /* | |
53 | * Determine which protocol version the client has requested. Since | |
54 | * multiple 'version' keys can be sent by the client, indicating that | |
55 | * the client is okay to speak any of them, select the greatest version | |
56 | * that the client has requested. This is due to the assumption that | |
57 | * the most recent protocol version will be the most state-of-the-art. | |
58 | */ | |
59 | if (git_protocol) { | |
60 | struct string_list list = STRING_LIST_INIT_DUP; | |
61 | const struct string_list_item *item; | |
62 | string_list_split(&list, git_protocol, ':', -1); | |
63 | ||
64 | for_each_string_list_item(item, &list) { | |
65 | const char *value; | |
66 | enum protocol_version v; | |
67 | ||
68 | if (skip_prefix(item->string, "version=", &value)) { | |
69 | v = parse_protocol_version(value); | |
70 | if (v > version) | |
71 | version = v; | |
72 | } | |
73 | } | |
74 | ||
75 | string_list_clear(&list, 0); | |
76 | } | |
77 | ||
626beebd JS |
78 | trace2_data_intmax("transfer", NULL, "negotiated-version", version); |
79 | ||
373d70ef BW |
80 | return version; |
81 | } | |
82 | ||
83 | enum protocol_version determine_protocol_version_client(const char *server_response) | |
84 | { | |
85 | enum protocol_version version = protocol_v0; | |
86 | ||
87 | if (skip_prefix(server_response, "version ", &server_response)) { | |
88 | version = parse_protocol_version(server_response); | |
89 | ||
90 | if (version == protocol_unknown_version) | |
91 | die("server is speaking an unknown protocol"); | |
92 | if (version == protocol_v0) | |
93 | die("protocol error: server explicitly said version 0"); | |
94 | } | |
95 | ||
96 | return version; | |
97 | } |