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137 lines
3.9 KiB
137 lines
3.9 KiB
8 years ago
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From acac103ba5772ae738ce5409d17feab80596cde6 Mon Sep 17 00:00:00 2001
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From: "Neal H. Walfield" <neal@g10code.com>
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Date: Fri, 12 Feb 2016 22:12:21 +0100
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Subject: [PATCH 1/1] common: Change simple_query to ignore status messages.
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* common/simple-pwquery.c (simple_query): Ignore status messages.
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--
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Signed-off-by: Neal H. Walfield <neal@g10code.com>
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GnuPG-bug-id: 2229
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---
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common/simple-pwquery.c | 95 ++++++++++++++++++++++++++++++++++---------------
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1 file changed, 67 insertions(+), 28 deletions(-)
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diff --git a/common/simple-pwquery.c b/common/simple-pwquery.c
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index 90d04c0..b2d666c 100644
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--- a/common/simple-pwquery.c
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+++ b/common/simple-pwquery.c
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@@ -618,6 +618,7 @@ simple_query (const char *query)
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int fd = -1;
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int nread;
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char response[500];
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+ int have = 0;
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int rc;
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rc = agent_open (&fd);
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@@ -628,40 +629,78 @@ simple_query (const char *query)
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if (rc)
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goto leave;
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- /* get response */
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- nread = readline (fd, response, 499);
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- if (nread < 0)
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- {
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- rc = -nread;
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- goto leave;
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- }
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- if (nread < 3)
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+ while (1)
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{
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- rc = SPWQ_PROTOCOL_ERROR;
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- goto leave;
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- }
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+ if (! have || ! strchr (response, '\n'))
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+ /* get response */
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+ {
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+ nread = readline (fd, &response[have],
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+ sizeof (response) - 1 /* NUL */ - have);
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+ if (nread < 0)
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+ {
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+ rc = -nread;
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+ goto leave;
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+ }
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+ have += nread;
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+ if (have < 3)
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+ {
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+ rc = SPWQ_PROTOCOL_ERROR;
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+ goto leave;
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+ }
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+ response[have] = 0;
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+ }
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- if (response[0] == 'O' && response[1] == 'K')
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- /* OK, do nothing. */;
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- else if ((nread > 7 && !memcmp (response, "ERR 111", 7)
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- && (response[7] == ' ' || response[7] == '\n') )
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- || ((nread > 4 && !memcmp (response, "ERR ", 4)
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- && (strtoul (response+4, NULL, 0) & 0xffff) == 99)) )
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- {
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- /* 111 is the old Assuan code for canceled which might still
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- be in use by old installations. 99 is GPG_ERR_CANCELED as
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- used by modern gpg-agents; 0xffff is used to mask out the
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- error source. */
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+ if (response[0] == 'O' && response[1] == 'K')
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+ /* OK, do nothing. */;
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+ else if ((nread > 7 && !memcmp (response, "ERR 111", 7)
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+ && (response[7] == ' ' || response[7] == '\n') )
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+ || ((nread > 4 && !memcmp (response, "ERR ", 4)
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+ && (strtoul (response+4, NULL, 0) & 0xffff) == 99)) )
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+ {
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+ /* 111 is the old Assuan code for canceled which might still
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+ be in use by old installations. 99 is GPG_ERR_CANCELED as
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+ used by modern gpg-agents; 0xffff is used to mask out the
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+ error source. */
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#ifdef SPWQ_USE_LOGGING
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- log_info (_("canceled by user\n") );
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+ log_info (_("canceled by user\n") );
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#endif
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- }
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- else
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- {
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+ }
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+ else if (response[0] == 'S' && response[1] == ' ')
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+ {
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+ char *nextline;
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+ int consumed;
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+
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+ nextline = strchr (response, '\n');
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+ if (! nextline)
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+ /* Point to the NUL. */
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+ nextline = &response[have];
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+ else
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+ /* Move past the \n. */
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+ nextline ++;
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+
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+ consumed = (size_t) nextline - (size_t) response;
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+
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+ /* Skip any additional newlines. */
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+ while (consumed < have && response[consumed] == '\n')
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+ consumed ++;
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+
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+ have -= consumed;
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+
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+ if (have)
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+ memmove (response, &response[consumed], have + 1);
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+
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+ continue;
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+ }
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+ else
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+ {
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#ifdef SPWQ_USE_LOGGING
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- log_error (_("problem with the agent\n"));
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+ log_error (_("problem with the agent (unexpected response \"%s\"\n"),
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+ response);
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#endif
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- rc = SPWQ_ERR_RESPONSE;
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+ rc = SPWQ_ERR_RESPONSE;
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+ }
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+
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+ break;
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}
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leave:
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--
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2.1.4
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