f4609b896f
This also bumps the stable nixpkgs to 20.09 as of 2020-11-21, because there is some breakage in the git build related to the netrc credentials helper which someone has taken care of in nixpkgs. The stable channel is not used for anything other than git, so this should be fine. Change-Id: I3575a19dab09e1e9556cf8231d717de9890484fb
93 lines
2.4 KiB
C
93 lines
2.4 KiB
C
#include "cache.h"
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#include "config.h"
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#include "protocol.h"
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static enum protocol_version parse_protocol_version(const char *value)
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{
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if (!strcmp(value, "0"))
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return protocol_v0;
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else if (!strcmp(value, "1"))
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return protocol_v1;
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else if (!strcmp(value, "2"))
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return protocol_v2;
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else
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return protocol_unknown_version;
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}
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enum protocol_version get_protocol_version_config(void)
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{
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const char *value;
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const char *git_test_k = "GIT_TEST_PROTOCOL_VERSION";
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const char *git_test_v;
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if (!git_config_get_string_tmp("protocol.version", &value)) {
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enum protocol_version version = parse_protocol_version(value);
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if (version == protocol_unknown_version)
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die("unknown value for config 'protocol.version': %s",
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value);
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return version;
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}
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git_test_v = getenv(git_test_k);
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if (git_test_v && *git_test_v) {
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enum protocol_version env = parse_protocol_version(git_test_v);
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if (env == protocol_unknown_version)
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die("unknown value for %s: %s", git_test_k, git_test_v);
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return env;
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}
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return protocol_v2;
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}
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enum protocol_version determine_protocol_version_server(void)
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{
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const char *git_protocol = getenv(GIT_PROTOCOL_ENVIRONMENT);
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enum protocol_version version = protocol_v0;
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/*
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* Determine which protocol version the client has requested. Since
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* multiple 'version' keys can be sent by the client, indicating that
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* the client is okay to speak any of them, select the greatest version
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* that the client has requested. This is due to the assumption that
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* the most recent protocol version will be the most state-of-the-art.
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*/
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if (git_protocol) {
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struct string_list list = STRING_LIST_INIT_DUP;
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const struct string_list_item *item;
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string_list_split(&list, git_protocol, ':', -1);
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for_each_string_list_item(item, &list) {
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const char *value;
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enum protocol_version v;
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if (skip_prefix(item->string, "version=", &value)) {
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v = parse_protocol_version(value);
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if (v > version)
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version = v;
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}
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}
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string_list_clear(&list, 0);
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}
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return version;
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}
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enum protocol_version determine_protocol_version_client(const char *server_response)
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{
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enum protocol_version version = protocol_v0;
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if (skip_prefix(server_response, "version ", &server_response)) {
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version = parse_protocol_version(server_response);
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if (version == protocol_unknown_version)
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die("server is speaking an unknown protocol");
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if (version == protocol_v0)
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die("protocol error: server explicitly said version 0");
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}
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return version;
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}
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