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[PATCH 5/6] credential: use git_prompt instead of git_getpass

From
Jeff King <peff@peff.net>
Date
Nov 27, 2011, 08:31 UTC
Message-ID
<20111127083113.GE1702@sigill.intra.peff.net>
In-Reply-To
<20111127082744.GA32068@sigill.intra.peff.net>

When we request a username and password from the user on the terminal, we can't use stdin/stdout, because they may be connected to pipes to other git processes.

Instead, we use getpass() (via git_getpass), which will generally open /dev/tty and read and write from that. The only problem is that getpass is meant to take passwords, and therefore will not echo characters from the username, which is annoying.

Now that git_prompt understand the "echo" flag, we can use that to let the user see their username as they type it.

Signed-off-by: Jeff King <peff@peff.net>
---
 credential.c |   15 +++++++--------
 1 files changed, 7 insertions(+), 8 deletions(-)
diff --git a/credential.c b/credential.c
index d918ba5..9ad580d 100644
--- a/credential.c
+++ b/credential.c
@@ -109,7 +109,8 @@ static void credential_describe(struct credential *c, struct strbuf *out)
 		strbuf_addf(out, "/%s", c->path);
 }
 
-static char *credential_ask_one(const char *what, struct credential *c)
+static char *credential_ask_one(const char *what, struct credential *c,
+				int flags)
 {
 	struct strbuf desc = STRBUF_INIT;
 	struct strbuf prompt = STRBUF_INIT;
@@ -121,11 +122,7 @@ static void credential_describe(struct credential *c, struct strbuf *out)
 	else
 		strbuf_addf(&prompt, "%s: ", what);
 
-	/* FIXME: for usernames, we should do something less magical that
-	 * actually echoes the characters. However, we need to read from
-	 * /dev/tty and not stdio, which is not portable (but getpass will do
-	 * it for us). http.c uses the same workaround. */
-	r = git_getpass(prompt.buf);
+	r = git_prompt(prompt.buf, what, flags);
 
 	strbuf_release(&desc);
 	strbuf_release(&prompt);
@@ -135,9 +132,11 @@ static void credential_describe(struct credential *c, struct strbuf *out)
 static void credential_getpass(struct credential *c)
 {
 	if (!c->username)
-		c->username = credential_ask_one("Username", c);
+		c->username = credential_ask_one("Username", c,
+						 PROMPT_ASKPASS|PROMPT_ECHO);
 	if (!c->password)
-		c->password = credential_ask_one("Password", c);
+		c->password = credential_ask_one("Password", c,
+						 PROMPT_ASKPASS);
 }
 
 int credential_read(struct credential *c, FILE *fp)
-- 
1.7.7.4.7.g24824
Previous: Jeff KingNext: Jeff King
Message 40 of 49 in “credential helpers, take two”
  1. 0/13 credential helpers, take twoJeff King, Nov 24, 2011
  2. 01/13 test-lib: add test_config_global variantJeff King, Nov 24, 2011
  3. 02/13 t5550: fix typoJeff King, Nov 24, 2011
  4. 03/13 introduce credentials APIJeff King, Nov 24, 2011
  5. Junio C HamanoNov 28, 2011
  6. Jeff KingNov 29, 2011
  7. Junio C HamanoNov 29, 2011
  8. Jeff KingNov 29, 2011
  9. 04/13 credential: add function for parsing url componentsJeff King, Nov 24, 2011
  10. 05/13 http: use credential API to get passwordsJeff King, Nov 24, 2011
  11. 06/13 credential: apply helper configJeff King, Nov 24, 2011
  12. 07/13 credential: add credential.*.usernameJeff King, Nov 24, 2011
  13. 08/13 credential: make relevance of http path configurableJeff King, Nov 24, 2011
  14. 09/13 docs: end-user documentation for the credential subsystemJeff King, Nov 24, 2011
  15. 10/13 credentials: add "cache" helperJeff King, Nov 24, 2011
  16. Eric SunshineNov 24, 2011
  17. Junio C HamanoNov 29, 2011
  18. Jeff KingNov 29, 2011
  19. 11/13 strbuf: add strbuf_add*_urlencodeJeff King, Nov 24, 2011
  20. Junio C HamanoNov 29, 2011
  21. Jeff KingNov 29, 2011
  22. René ScharfeNov 29, 2011
  23. Jeff KingNov 30, 2011
  24. Junio C HamanoNov 30, 2011
  25. René ScharfeNov 30, 2011
  26. 12/13 credentials: add "store" helperJeff King, Nov 24, 2011
  27. Eric SunshineNov 24, 2011
  28. Jeff KingNov 24, 2011
  29. Junio C HamanoNov 29, 2011
  30. Jeff KingNov 29, 2011
  31. 13/13 t: add test harness for external credential helpersJeff King, Nov 24, 2011
  32. Erik Faye-LundNov 24, 2011
  33. Jeff KingNov 24, 2011
  34. Erik Faye-LundNov 24, 2011
  35. 0/6 echo usernames as they are typedJeff King, Nov 27, 2011
  36. 1/6 move git_getpass to its own source fileJeff King, Nov 27, 2011
  37. 2/6 refactor git_getpass into generic prompt functionJeff King, Nov 27, 2011
  38. 3/6 stub out getpass_echo functionJeff King, Nov 27, 2011
  39. 4/6 prompt: add PROMPT_ECHO flagJeff King, Nov 27, 2011
  40. 5/6 credential: use git_prompt instead of git_getpassJeff King, Nov 27, 2011
  41. 6/6 compat/getpass: add a /dev/tty implementationJeff King, Nov 27, 2011
  42. Junio C HamanoNov 27, 2011
  43. Erik Faye-LundNov 27, 2011
  44. Jeff KingNov 28, 2011
  45. Erik Faye-LundNov 28, 2011
  46. Jeff KingNov 28, 2011
  47. Frans KlaverNov 28, 2011
  48. Erik Faye-LundNov 28, 2011
  49. Jeff KingNov 28, 2011

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