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Simplify conversion of command line args to name=value pairs.

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This commit is contained in:
Todd C. Miller
2010-03-05 17:14:19 -05:00
parent 1e131d4278
commit 5ff6832e16
1 changed files with 38 additions and 53 deletions
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91
src/parse_args.c
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@@ -72,52 +72,37 @@ static void usage_excl(int) __attribute__((__noreturn__));
/*
* Mapping of command line flags to name/value settings.
*/
struct name_value_pair {
static struct sudo_settings {
const char *name;
const char *value;
};
static struct sudo_settings {
struct name_value_pair a;
struct name_value_pair c;
struct name_value_pair D;
struct name_value_pair E;
struct name_value_pair g;
struct name_value_pair H;
struct name_value_pair i;
struct name_value_pair k;
struct name_value_pair p;
struct name_value_pair r;
struct name_value_pair t;
struct name_value_pair u;
} sudo_settings = {
} sudo_settings[] = {
#define ARG_BSDAUTH_TYPE 0
{ "bsdauth_type" },
#define ARG_LOGIN_CLASS 1
{ "login_class" },
#define ARG_DEBUG_LEVEL 2
{ "debug_level" },
#define ARG_PRESERVE_ENVIRONMENT 3
{ "preserve_environment" },
#define ARG_RUNAS_GROUP 4
{ "runas_group" },
#define ARG_SET_HOME 5
{ "set_home" },
#define ARG_LOGIN_SHELL 6
{ "login_shell" },
#define ARG_IGNORE_TICKET 7
{ "ignore_ticket" },
#define ARG_PROMPT 8
{ "prompt" },
#define ARG_SELINUX_ROLE 9
{ "selinux_role" },
#define ARG_SELINUX_TYPE 10
{ "selinux_type" },
{ "runas_user" }
#define ARG_RUNAS_USER 11
{ "runas_user" },
#define NUM_SETTINGS 12
{ NULL }
};
static struct name_value_pair *setting_pairs[] = {
&sudo_settings.a,
&sudo_settings.c,
&sudo_settings.D,
&sudo_settings.E,
&sudo_settings.g,
&sudo_settings.H,
&sudo_settings.i,
&sudo_settings.k,
&sudo_settings.p,
&sudo_settings.r,
&sudo_settings.t,
&sudo_settings.u
};
#define settings_size (sizeof(setting_pairs) / sizeof(setting_pairs[0]))
/*
* Command line argument parsing.
@@ -170,7 +155,7 @@ parse_args(int argc, char **argv, int *nargc, char ***nargv, char ***settingsp,
break;
#ifdef HAVE_BSD_AUTH_H
case 'a':
sudo_settings.a.value = optarg;
sudo_settings[ARG_BSDAUTH_TYPE].value = optarg;
break;
#endif
case 'b':
@@ -184,7 +169,7 @@ parse_args(int argc, char **argv, int *nargc, char ***nargv, char ***settingsp,
break;
#ifdef HAVE_LOGIN_CAP_H
case 'c':
sudo_settings.c.value = optarg;
sudo_settings[ARG_LOGIN_CLASS].value = optarg;
break;
#endif
case 'D':
@@ -192,10 +177,10 @@ parse_args(int argc, char **argv, int *nargc, char ***nargv, char ***settingsp,
warningx("the argument to -D must be between 1 and 9 inclusive");
usage(1);
}
sudo_settings.D.value = optarg;
sudo_settings[ARG_DEBUG_LEVEL].value = optarg;
break;
case 'E':
sudo_settings.c.value = "true";
sudo_settings[ARG_PRESERVE_ENVIRONMENT].value = "true";
break;
case 'e':
if (mode && mode != MODE_EDIT)
@@ -205,10 +190,10 @@ parse_args(int argc, char **argv, int *nargc, char ***nargv, char ***settingsp,
break;
case 'g':
runas_group = optarg;
sudo_settings.g.value = optarg;
sudo_settings[ARG_RUNAS_GROUP].value = optarg;
break;
case 'H':
sudo_settings.H.value = optarg;
sudo_settings[ARG_SET_HOME].value = "true";
break;
case 'h':
if (mode && mode != MODE_HELP) {
@@ -219,15 +204,15 @@ parse_args(int argc, char **argv, int *nargc, char ***nargv, char ***settingsp,
valid_flags = 0;
break;
case 'i':
sudo_settings.i.value = "true";
sudo_settings[ARG_LOGIN_SHELL].value = "true";
SET(flags, MODE_LOGIN_SHELL);
break;
case 'k':
sudo_settings.k.value = "true";
sudo_settings[ARG_IGNORE_TICKET].value = "true";
SET(flags, MODE_INVALIDATE);
break;
case 'K':
sudo_settings.k.value = "true";
sudo_settings[ARG_IGNORE_TICKET].value = "true";
if (mode && mode != MODE_KILL)
usage_excl(1);
mode = MODE_KILL;
@@ -250,14 +235,14 @@ parse_args(int argc, char **argv, int *nargc, char ***nargv, char ***settingsp,
SET(flags, MODE_PRESERVE_GROUPS);
break;
case 'p':
sudo_settings.i.value = optarg;
sudo_settings[ARG_PROMPT].value = optarg;
break;
#ifdef HAVE_SELINUX
case 'r':
sudo_settings.r.value = optarg;
sudo_settings[ARG_SELINUX_ROLE].value = optarg;
break;
case 't':
sudo_settings.t.value = optarg;
sudo_settings[ARG_SELINUX_TYPE].value = optarg;
break;
#endif
case 'S':
@@ -274,7 +259,7 @@ parse_args(int argc, char **argv, int *nargc, char ***nargv, char ***settingsp,
break;
case 'u':
runas_user = optarg;
sudo_settings.u.value = optarg;
sudo_settings[ARG_RUNAS_USER].value = optarg;
break;
case 'v':
if (mode && mode != MODE_VALIDATE)
@@ -314,7 +299,7 @@ parse_args(int argc, char **argv, int *nargc, char ***nargv, char ***settingsp,
if (ISSET(flags, MODE_INVALIDATE) && *nargc == 0) {
mode = MODE_INVALIDATE; /* -k by itself */
CLR(flags, MODE_INVALIDATE);
sudo_settings.k.value = NULL;
sudo_settings[ARG_IGNORE_TICKET].value = NULL;
valid_flags = 0;
} else {
mode = MODE_RUN; /* running a command */
@@ -369,13 +354,13 @@ parse_args(int argc, char **argv, int *nargc, char ***nargv, char ***settingsp,
/*
* Format setting_pairs into settings array.
*/
settings = emalloc2(settings_size + 1, sizeof (char *));
for (i = 0, j = 0; i < settings_size; i++) {
if (setting_pairs[i]->value) {
sudo_debug(9, "settings: %s=%s", setting_pairs[i]->name,
setting_pairs[i]->value);
settings[j++] = fmt_string(setting_pairs[i]->name,
setting_pairs[i]->value);
settings = emalloc2(NUM_SETTINGS + 1, sizeof (char *));
for (i = 0, j = 0; i < NUM_SETTINGS; i++) {
if (sudo_settings[i].value) {
sudo_debug(9, "settings: %s=%s", sudo_settings[i].name,
sudo_settings[i].value);
settings[j++] = fmt_string(sudo_settings[i].name,
sudo_settings[i].value);
}
}
settings[j] = NULL;