summaryrefslogtreecommitdiff
path: root/transport.c
blob: edbdc3c60ed5ec0b49298f9d70e123cf0a5f1e39 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
#include "cache.h"
#include "transport.h"
#include "run-command.h"
 
static const struct transport_ops rsync_transport;
 
static int curl_transport_push(struct transport *transport, int refspec_nr, const char **refspec, int flags) {
	const char **argv;
	int argc;
	int err;
 
	argv = xmalloc((refspec_nr + 11) * sizeof(char *));
	argv[0] = "http-push";
	argc = 1;
	if (flags & TRANSPORT_PUSH_ALL)
		argv[argc++] = "--all";
	if (flags & TRANSPORT_PUSH_FORCE)
		argv[argc++] = "--force";
	argv[argc++] = transport->url;
	while (refspec_nr--)
		argv[argc++] = *refspec++;
	argv[argc] = NULL;
	err = run_command_v_opt(argv, RUN_GIT_CMD);
	switch (err) {
	case -ERR_RUN_COMMAND_FORK:
		error("unable to fork for %s", argv[0]);
	case -ERR_RUN_COMMAND_EXEC:
		error("unable to exec %s", argv[0]);
		break;
	case -ERR_RUN_COMMAND_WAITPID:
	case -ERR_RUN_COMMAND_WAITPID_WRONG_PID:
	case -ERR_RUN_COMMAND_WAITPID_SIGNAL:
	case -ERR_RUN_COMMAND_WAITPID_NOEXIT:
		error("%s died with strange error", argv[0]);
	}
	return !!err;
}
 
static const struct transport_ops curl_transport = {
	/* set_option */	NULL,
	/* push */		curl_transport_push
};
 
static const struct transport_ops bundle_transport = {
};
 
struct git_transport_data {
	unsigned thin : 1;
 
	const char *receivepack;
};
 
static int set_git_option(struct transport *connection,
			  const char *name, const char *value)
{
	struct git_transport_data *data = connection->data;
	if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) {
		data->receivepack = value;
		return 0;
	} else if (!strcmp(name, TRANS_OPT_THIN)) {
		data->thin = !!value;
		return 0;
	}
	return 1;
}
 
static int git_transport_push(struct transport *transport, int refspec_nr, const char **refspec, int flags) {
	struct git_transport_data *data = transport->data;
	const char **argv;
	char *rem;
	int argc;
	int err;
 
	argv = xmalloc((refspec_nr + 11) * sizeof(char *));
	argv[0] = "send-pack";
	argc = 1;
	if (flags & TRANSPORT_PUSH_ALL)
		argv[argc++] = "--all";
	if (flags & TRANSPORT_PUSH_FORCE)
		argv[argc++] = "--force";
	if (data->receivepack) {
		char *rp = xmalloc(strlen(data->receivepack) + 16);
		sprintf(rp, "--receive-pack=%s", data->receivepack);
		argv[argc++] = rp;
	}
	if (data->thin)
		argv[argc++] = "--thin";
	rem = xmalloc(strlen(transport->remote->name) + 10);
	sprintf(rem, "--remote=%s", transport->remote->name);
	argv[argc++] = rem;
	argv[argc++] = transport->url;
	while (refspec_nr--)
		argv[argc++] = *refspec++;
	argv[argc] = NULL;
	err = run_command_v_opt(argv, RUN_GIT_CMD);
	switch (err) {
	case -ERR_RUN_COMMAND_FORK:
		error("unable to fork for %s", argv[0]);
	case -ERR_RUN_COMMAND_EXEC:
		error("unable to exec %s", argv[0]);
		break;
	case -ERR_RUN_COMMAND_WAITPID:
	case -ERR_RUN_COMMAND_WAITPID_WRONG_PID:
	case -ERR_RUN_COMMAND_WAITPID_SIGNAL:
	case -ERR_RUN_COMMAND_WAITPID_NOEXIT:
		error("%s died with strange error", argv[0]);
	}
	return !!err;
}
 
static const struct transport_ops git_transport = {
	/* set_option */	set_git_option,
	/* push */		git_transport_push
};
 
static int is_local(const char *url)
{
	const char *colon = strchr(url, ':');
	const char *slash = strchr(url, '/');
	return !colon || (slash && slash < colon);
}
 
static int is_file(const char *url)
{
	struct stat buf;
	if (stat(url, &buf))
		return 0;
	return S_ISREG(buf.st_mode);
}
 
struct transport *transport_get(struct remote *remote, const char *url,
				int fetch)
{
	struct transport *ret = NULL;
	if (!prefixcmp(url, "rsync://")) {
		ret = xmalloc(sizeof(*ret));
		ret->data = NULL;
		ret->ops = &rsync_transport;
	} else if (!prefixcmp(url, "http://") || !prefixcmp(url, "https://") ||
		   !prefixcmp(url, "ftp://")) {
		ret = xmalloc(sizeof(*ret));
		ret->ops = &curl_transport;
		ret->data = NULL;
	} else if (is_local(url) && is_file(url)) {
		ret = xmalloc(sizeof(*ret));
		ret->data = NULL;
		ret->ops = &bundle_transport;
	} else {
		struct git_transport_data *data = xcalloc(1, sizeof(*data));
		ret = xcalloc(1, sizeof(*ret));
		ret->data = data;
		data->thin = 1;
		data->receivepack = "git-receive-pack";
		if (remote && remote->receivepack)
			data->receivepack = remote->receivepack;
		ret->ops = &git_transport;
	}
	if (ret) {
		ret->remote = remote;
		ret->url = url;
		ret->fetch = !!fetch;
	}
	return ret;
}
 
int transport_set_option(struct transport *transport,
			 const char *name, const char *value)
{
	int ret = 1;
	if (transport->ops->set_option)
		ret = transport->ops->set_option(transport, name, value);
	if (ret < 0)
		fprintf(stderr, "For '%s' option %s cannot be set to '%s'\n",
			transport->url, name, value);
	if (ret > 0)
		fprintf(stderr, "For '%s' option %s is ignored\n",
			transport->url, name);
	return ret;
}
 
int transport_push(struct transport *transport,
		   int refspec_nr, const char **refspec, int flags)
{
	if (!transport->ops->push)
		return 1;
	return transport->ops->push(transport, refspec_nr, refspec, flags);
}
 
int transport_disconnect(struct transport *transport)
{
	int ret = 0;
	if (transport->ops->disconnect)
		ret = transport->ops->disconnect(transport);
	free(transport);
	return ret;
}