/* Copyright (c) 2000-2010, Dirk Krause All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above opyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of the Dirk Krause nor the names of contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /** @file dkpref.c The dkpref program. */ /* dkpref -a -g [] -e exclude sources 'c' command line 'p' program 'u' user 's' system -m macro expansion -p path name correction */ #include "dk.h" #include #if DK_HAVE_STDLIB_H #include #endif #if DK_HAVE_UNISTD_H #include #endif #if DK_HAVE_PROCESS_H #include #endif #include "dklogc.h" #include "dkmem.h" #include "dkapp.h" #include "dksf.h" #line 76 "dkpref.ctr" /** System configuration directory */ static char sysconfdir[] = { DK_SYSCONFDIR }; /** Program name. */ static char prname[] = { "dkpref" }; /** Application group. */ static char grname[] = { "dktools" }; /** Preference name to retrieve slash/backslash. */ static char slash[] = { "/" }; /** Messages printed by the program. */ static dk_key_value_t kv[] = { { "/m/000", "Option ``-a'' was used multiple times!" }, { "/m/001", "Option ``-g'' was used multiple times!" }, { "/m/002", "Failed to create application structure!" }, { "/m/003", "Failed to set preference value!!" }, { "/m/004", "Macro expansion failed!" }, { "/m/005", "Preference not found!!" }, { "/m/006", "Value too long!" } }; static size_t szkv = sizeof(kv)/sizeof(dk_key_value_t); /**< Number of messaages in array. */ /** Buffer for data. */ static char b1[16384]; /** Buffer for data. */ static char b2[sizeof(b1)]; /** Program configuration. */ typedef struct { dk_app_t *a; /**< Application structure. */ dk_app_t *a2; /**< Second application. */ char **msg; /**< Messages printed by the program. */ char *n_a; /**< Application name. */ char *n_g; /**< Application group name. */ char *k; /**< Key. */ char *v; /**< Value. */ int excl; /**< Source to exclude. */ int exval; /**< Main programs exit code. */ unsigned char m; /**< Flag: Macro expansion. */ unsigned char p; /**< Flag: Path separator correction. */ } DKPREF; /** Text to show as usage information. */ static char *usage_text[] = { "", "dkpref - Retrieve and set preferences for applications", "======================================================", "", "To retrieve a preference value run", " dkpref [] ", "", "To set a preference value run", " dkpref [] ", "", "The following options can be used:", "", "-a specify an application name", "-g specify an application group name", "-e specify a list of preferences sources to exclude.", " The list contains of characters", " c command line options", " p preferences set by the program itself", " u user preferences", " s system preferences", "-m expand macros", "-p correct slash/backslash in path names", "", }; /** Initialize program configuration. @param p Structure to configure. */ static void dkpref_init DK_P1(DKPREF *,p) { p->a = NULL; p->a2 = NULL; p->msg = NULL; p->excl = 0; p->m = 0x00; p->p = 0x00; p->n_a = NULL; p->n_g = NULL; p->k = NULL; p->v = NULL; p->exval = 0; } /** Process command line arguments. @param p Configuration. @return 1 on success, 0 on error. */ static int process_arguments DK_P1(DKPREF *,p) { int back = 1; int argc; char *ptr; char **argv; char **lfdptr; unsigned char show_usage = 0x00; int i; argc = dkapp_get_argc(p->a); argv = dkapp_get_argv(p->a); lfdptr = argv; lfdptr++; i = 1; while(i < argc) { ptr = *lfdptr; if(*ptr == '-') { ptr++; switch(*ptr) { case 'a': { ptr++; if(!(*ptr)) { ptr = NULL; lfdptr++; i++; if(i < argc) { ptr = *lfdptr; } } if(ptr) { if(p->n_a) { /* Warning -a multiple times */ dkapp_log_msg(p->a, DK_LOG_LEVEL_WARNING, &((p->msg)[0]), 1); } p->n_a = ptr; } } break; case 'g': { ptr++; if(!(*ptr)) { ptr = NULL; lfdptr++; i++; if(i < argc) { ptr = *lfdptr; } } if(ptr) { if(p->n_g) { /* Warning -g multiple times */ dkapp_log_msg(p->a, DK_LOG_LEVEL_WARNING, &((p->msg)[1]), 1); } p->n_g = ptr; } } break; case 'e': { ptr++; if(!(*ptr)) { ptr = NULL; lfdptr++; i++; if(i < argc) { ptr = *lfdptr; } } if(ptr) { while(*ptr) { switch(*(ptr++)) { case 'c': { p->excl |= DK_APP_PREF_EXCL_CMD; } break; case 'p': { p->excl |= DK_APP_PREF_EXCL_PROG; } break; case 'u': { p->excl |= DK_APP_PREF_EXCL_USER; } break; case 's': { p->excl |= DK_APP_PREF_EXCL_SYSTEM; } break; default: { back = 0; show_usage = 0x01; } break; } } } } break; case 'm': { p->m = 0x01; } break; case 'p': { p->p = 0x01; } break; default: { back = 0; show_usage = 0x01; } break; } } else { if(p->k) { if(p->v) { back = 0; show_usage = 0x01; } else { p->v = ptr; } } else { p->k = ptr; } } i++; lfdptr++; } if(!back) { if(show_usage) { dkapp_help(p->a, "dkpref.txt", usage_text); } } return back; } /** Create second application structure. @param p Configuration. */ static void create_second_app DK_P1(DKPREF *,p) { char *argv[2]; argv[0] = ((p->n_a) ? (p->n_a) : prname); argv[1] = NULL; p->a2 = dkapp_open_ext1( 1, argv, ((p->n_g) ? (p->n_g) : grname), sysconfdir,0,DK_APP_LOG_NO_STDOUT ); if(!(p->a2)) { /* ERROR: Failed to create second application */ dkapp_log_msg(p->a, DK_LOG_LEVEL_ERROR, &((p->msg)[2]), 1); p->exval = 1; } } /** Set preference value. @param p Configuration. */ static void set_value DK_P1(DKPREF *,p) { unsigned char usable = 0x00; create_second_app(p); if(p->a2) { if(strcmp(p->k, slash)) { if(strlen(p->v) < sizeof(b1)) { strcpy(b1, p->v); usable = 0x01; if(p->m) { if(dkapp_transform_string(p->a2, b2, sizeof(b2), b1)) { strcpy(b1, b2); } else { dkapp_log_msg(p->a, DK_LOG_LEVEL_ERROR, &((p->msg)[4]), 1); p->exval = 1; usable = 0x00; } } if(p->p) { dksf_correct_fnsep(b1); } if(usable) { if(!dkapp_set_pref(p->a2, p->k, p->v)) { dkapp_log_msg(p->a, DK_LOG_LEVEL_ERROR, &((p->msg)[3]), 1); p->exval = 1; } } } else { /* ##### ERROR: Value too long */ p->exval = 1; } } else { dkapp_log_msg(p->a, DK_LOG_LEVEL_ERROR, &((p->msg)[3]), 1); p->exval = 1; } dkapp_close(p->a2); p->a2 = NULL; } } /** Retrieve preference value. @param p Configuration. */ static void get_value DK_P1(DKPREF *,p) { unsigned char usable = 0x00; create_second_app(p); if(p->a2) { if(dkapp_get_pref(p->a2, p->k, b1, sizeof(b1), p->excl)) { usable = 0x01; if(p->m) { if(dkapp_transform_string(p->a2, b2, sizeof(b2), b1)) { strcpy(b1, b2); } else { /* ERROR in string transformation */ dkapp_log_msg(p->a, DK_LOG_LEVEL_ERROR, &((p->msg)[4]), 1); p->exval = 1; usable = 0x00; } } if(p->p) { dksf_correct_fnsep(b1); } if(usable) { printf("%s\n", b1); } } else { if(strcmp(p->k, slash) == 0) { #if DK_HAVE_FEATURE_BACKSLASH printf("\\\n"); #else printf("/\n"); #endif } else { /* Failed to find preference */ dkapp_log_msg(p->a, DK_LOG_LEVEL_ERROR, &((p->msg)[5]), 1); p->exval = 1; } } dkapp_close(p->a2); p->a2 = NULL; } } /** Handle the request. @param p Configuration. */ static void run DK_P1(DKPREF *,p) { if(process_arguments(p)) { if(p->k) { if(p->v) { set_value(p); } else { get_value(p); } } else { p->exval = 1; dkapp_help(p->a, "dkpref.txt", usage_text); } } else { p->exval = 1; } } /** The main program. @param argc Number of arguments on the command line. @param argv Arguments of the command line. @return 0 on success, all other values indicate errors. */ #if DK_HAVE_PROTOTYPES int main(int argc, char *argv[]) #else int main(argc, argv) int argc; char *argv[]; #endif { DKPREF p; #line 478 "dkpref.ctr" dkpref_init(&p); p.a = dkapp_open_ext1(argc,argv,grname,sysconfdir,0,DK_APP_LOG_NO_STDOUT); if(p.a) { p.msg = dkapp_find_key_value(p.a, kv, szkv, prname); if(p.msg) { run(&p); dk_delete((p.msg)); } dkapp_close(p.a); p.a = NULL; } else { fprintf(stderr, "Not enough memory (RAM/swap)!\n"); fflush(stderr); } #line 494 "dkpref.ctr" exit(p.exval); return p.exval; }