Git 2.1
[git/git.git] / prompt.c
CommitLineData
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1#include "cache.h"
2#include "run-command.h"
3#include "strbuf.h"
4#include "prompt.h"
a5090259 5#include "compat/terminal.h"
d3c58b83 6
1cb0134f 7static char *do_askpass(const char *cmd, const char *prompt)
d3c58b83 8{
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9 struct child_process pass;
10 const char *args[3];
11 static struct strbuf buffer = STRBUF_INIT;
84d72733 12 int err = 0;
d3c58b83 13
1cb0134f 14 args[0] = cmd;
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15 args[1] = prompt;
16 args[2] = NULL;
17
18 memset(&pass, 0, sizeof(pass));
19 pass.argv = args;
20 pass.out = -1;
21
22 if (start_command(&pass))
84d72733 23 return NULL;
d3c58b83 24
e1c1a324 25 strbuf_reset(&buffer);
d3c58b83 26 if (strbuf_read(&buffer, pass.out, 20) < 0)
84d72733 27 err = 1;
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28
29 close(pass.out);
30
31 if (finish_command(&pass))
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32 err = 1;
33
34 if (err) {
35 error("unable to read askpass response from '%s'", cmd);
36 strbuf_release(&buffer);
37 return NULL;
38 }
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39
40 strbuf_setlen(&buffer, strcspn(buffer.buf, "\r\n"));
41
e1c1a324 42 return buffer.buf;
d3c58b83 43}
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44
45char *git_prompt(const char *prompt, int flags)
46{
84d72733 47 char *r = NULL;
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48
49 if (flags & PROMPT_ASKPASS) {
50 const char *askpass;
51
52 askpass = getenv("GIT_ASKPASS");
53 if (!askpass)
54 askpass = askpass_program;
55 if (!askpass)
56 askpass = getenv("SSH_ASKPASS");
57 if (askpass && *askpass)
84d72733 58 r = do_askpass(askpass, prompt);
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59 }
60
1cb0134f 61 if (!r)
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62 r = git_terminal_prompt(prompt, flags & PROMPT_ECHO);
63 if (!r) {
64 /* prompts already contain ": " at the end */
65 die("could not read %s%s", prompt, strerror(errno));
66 }
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67 return r;
68}
69
70char *git_getpass(const char *prompt)
71{
72 return git_prompt(prompt, PROMPT_ASKPASS);
73}