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common: Consolidate Assuan server argument handling.

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* common/Makefile.am (common_sources): Add new files.
* common/server-help.c: New file.
* common/server-help.h: Likewise.
* agent/command.c: Drop argument handling primitives in favor of using
the consolidated ones.
* dirmngr/server.c: Likewise.
* g10/server.c: Likewise.
* g13/server.c: Likewise.
* scd/command.c: Likewise.
* sm/server.c: Likewise.

Signed-off-by: Justus Winter <justus@g10code.com>
This commit is contained in:
Justus Winter 2016-03-02 14:14:33 +01:00
parent 9a1778abca
commit e77c85577d
9 changed files with 207 additions and 298 deletions
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48
scd/command.c
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@ -42,6 +42,7 @@
#include "ccid-driver.h"
#endif
#include "asshelp.h"
#include "server-help.h"
/* Maximum length allowed as a PIN; used for INQUIRE NEEDPIN */
#define MAXLEN_PIN 100
@ -219,53 +220,6 @@ update_card_removed (int vrdr, int value)
}
/* Check whether the option NAME appears in LINE. Returns 1 or 0. */
static int
has_option (const char *line, const char *name)
{
const char *s;
int n = strlen (name);
s = strstr (line, name);
return (s && (s == line || spacep (s-1)) && (!s[n] || spacep (s+n)));
}
/* Same as has_option but does only test for the name of the option
and ignores an argument, i.e. with NAME being "--hash" it would
return a pointer for "--hash" as well as for "--hash=foo". If
there is no such option NULL is returned. The pointer returned
points right behind the option name, this may be an equal sign, Nul
or a space. */
static const char *
has_option_name (const char *line, const char *name)
{
const char *s;
int n = strlen (name);
s = strstr (line, name);
return (s && (s == line || spacep (s-1))
&& (!s[n] || spacep (s+n) || s[n] == '=')) ? (s+n) : NULL;
}
/* Skip over options. It is assumed that leading spaces have been
removed (this is the case for lines passed to a handler from
assuan). Blanks after the options are also removed. */
static char *
skip_options (char *line)
{
while ( *line == '-' && line[1] == '-' )
{
while (*line && !spacep (line))
line++;
while (spacep (line))
line++;
}
return line;
}
/* Convert the STRING into a newly allocated buffer while translating
the hex numbers. Stops at the first invalid character. Blanks and
colons are allowed to separate the hex digits. Returns NULL on