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e1c1a324fc
This reverts commit 31b49d9b65.
That commit taught do_askpass to hand ownership of our
buffer back to the caller rather than simply return a
pointer into our internal strbuf. What it failed to notice,
though, was that our internal strbuf is static, because we
are trying to emulate the getpass() interface.
By handing off ownership, we created a memory leak that
cannot be solved. Sometimes git_prompt returns a static
buffer from getpass() (or our smarter git_terminal_prompt
wrapper), and sometimes it returns an allocated string from
do_askpass.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
73 lines
1.4 KiB
C
73 lines
1.4 KiB
C
#include "cache.h"
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#include "run-command.h"
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#include "strbuf.h"
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#include "prompt.h"
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#include "compat/terminal.h"
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static char *do_askpass(const char *cmd, const char *prompt)
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{
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struct child_process pass;
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const char *args[3];
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static struct strbuf buffer = STRBUF_INIT;
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int err = 0;
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args[0] = cmd;
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args[1] = prompt;
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args[2] = NULL;
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memset(&pass, 0, sizeof(pass));
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pass.argv = args;
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pass.out = -1;
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if (start_command(&pass))
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return NULL;
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strbuf_reset(&buffer);
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if (strbuf_read(&buffer, pass.out, 20) < 0)
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err = 1;
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close(pass.out);
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if (finish_command(&pass))
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err = 1;
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if (err) {
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error("unable to read askpass response from '%s'", cmd);
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strbuf_release(&buffer);
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return NULL;
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}
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strbuf_setlen(&buffer, strcspn(buffer.buf, "\r\n"));
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return buffer.buf;
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}
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char *git_prompt(const char *prompt, int flags)
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{
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char *r = NULL;
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if (flags & PROMPT_ASKPASS) {
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const char *askpass;
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askpass = getenv("GIT_ASKPASS");
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if (!askpass)
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askpass = askpass_program;
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if (!askpass)
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askpass = getenv("SSH_ASKPASS");
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if (askpass && *askpass)
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r = do_askpass(askpass, prompt);
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}
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if (!r)
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r = git_terminal_prompt(prompt, flags & PROMPT_ECHO);
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if (!r) {
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/* prompts already contain ": " at the end */
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die("could not read %s%s", prompt, strerror(errno));
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}
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return r;
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}
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char *git_getpass(const char *prompt)
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{
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return git_prompt(prompt, PROMPT_ASKPASS);
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}
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