subst.c revision 7822c1d410a1c6e98f8367de7593ca6e52df1f37
144339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o/* 244339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o * subst.c --- substitution program 344339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o * 444339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o * Subst is used as a quicky program to do @ substitutions 544339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o * 644339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o */ 744339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o 844339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o#include <stdio.h> 944339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o#include <errno.h> 1044339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o#include <stdlib.h> 1144339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o#include <unistd.h> 1244339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o#include <string.h> 1344339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o#include <ctype.h> 1444339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o 1544339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o#ifdef HAVE_GETOPT_H 1644339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o#include <getopt.h> 1744339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o#endif 1844339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o 1944339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o 2044339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'ostruct subst_entry { 2144339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o char *name; 2244339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o char *value; 2344339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o struct subst_entry *next; 2444339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o}; 2544339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o 2644339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'ostruct subst_entry *subst_table = 0; 2744339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o 2844339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'ostatic int add_subst(char *name, char *value) 2944339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o{ 3044339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o struct subst_entry *ent = 0; 3144339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o int retval; 3244339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o 3344339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o retval = ENOMEM; 3445d2161466e32b3e67115951ab1eb7eef25c218aTheodore Ts'o ent = (struct subst_entry *) malloc(sizeof(struct subst_entry)); 3544339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (!ent) 3644339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o goto fail; 3745d2161466e32b3e67115951ab1eb7eef25c218aTheodore Ts'o ent->name = (char *) malloc(strlen(name)+1); 3844339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (!ent->name) 3944339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o goto fail; 4045d2161466e32b3e67115951ab1eb7eef25c218aTheodore Ts'o ent->value = (char *) malloc(strlen(value)+1); 4144339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (!ent->value) 4244339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o goto fail; 4344339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o strcpy(ent->name, name); 4444339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o strcpy(ent->value, value); 4544339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o ent->next = subst_table; 4644339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o subst_table = ent; 4744339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o return 0; 4844339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'ofail: 4944339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (ent) { 5044339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (ent->name) 5144339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o free(ent->name); 5244339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (ent->value) 5344339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o free(ent->value); 5444339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o free(ent); 5544339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o } 5644339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o return retval; 5744339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o} 5844339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o 5944339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'ostatic struct subst_entry *fetch_subst_entry(char *name) 6044339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o{ 6144339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o struct subst_entry *ent; 6244339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o 6344339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o for (ent = subst_table; ent; ent = ent->next) { 6444339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (strcmp(name, ent->name) == 0) 6544339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o break; 6644339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o } 6744339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o return ent; 6844339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o} 6944339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o 70e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o/* 71e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o * Given the starting and ending position of the replacement name, 72e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o * check to see if it is valid, and pull it out if it is. 73e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o */ 74e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'ostatic char *get_subst_symbol(const char *begin, int len, char prefix) 75e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o{ 76e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o static char replace_name[128]; 77e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o char *cp, *start; 78e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o 79e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o start = replace_name; 80e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o if (prefix) 81e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o *start++ = prefix; 82e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o 83e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o if (len > sizeof(replace_name)-2) 84e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o return NULL; 85e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o memcpy(start, begin, len); 86e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o start[len] = 0; 87e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o 88e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o /* 897822c1d410a1c6e98f8367de7593ca6e52df1f37Theodore Ts'o * The substitution variable must all be in the of [0-9A-Za-z_]. 90e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o * If it isn't, this must be an invalid symbol name. 91e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o */ 92e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o for (cp = start; *cp; cp++) { 93e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o if (!(*cp >= 'a' && *cp <= 'z') && 94e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o !(*cp >= 'A' && *cp <= 'Z') && 957822c1d410a1c6e98f8367de7593ca6e52df1f37Theodore Ts'o !(*cp >= '0' && *cp <= '9') && 96e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o !(*cp == '_')) 97e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o return NULL; 98e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o } 99e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o return (replace_name); 100e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o} 101e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o 102e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'ostatic void replace_string(char *begin, char *end, char *newstr) 103e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o{ 104e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o int replace_len, len; 105e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o 106e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o replace_len = strlen(newstr); 107e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o len = end - begin; 108e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o if (replace_len != len+1) 109e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o memmove(end+(replace_len-len-1), end, 110e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o strlen(end)+1); 111e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o memcpy(begin, newstr, replace_len); 112e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o} 113e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o 11444339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'ostatic void substitute_line(char *line) 11544339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o{ 116e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o char *ptr, *name_ptr, *end_ptr, *cp, ch; 11744339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o struct subst_entry *ent; 118e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o char *replace_name; 11944339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o int len, replace_len; 12044339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o 121e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o /* 122e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o * Expand all @FOO@ substitutions 123e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o */ 12444339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o ptr = line; 12544339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o while (ptr) { 12644339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o name_ptr = strchr(ptr, '@'); 12744339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (!name_ptr) 128e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o break; /* No more */ 129e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o if (*(++name_ptr) == '@') { 130e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o /* 131e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o * Handle tytso@@mit.edu --> tytso@mit.edu 132e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o */ 133e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o memmove(name_ptr-1, name_ptr, strlen(name_ptr)+1); 134e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o ptr = name_ptr+1; 135e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o continue; 136e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o } 137e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o end_ptr = strchr(name_ptr, '@'); 13844339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (!end_ptr) 13944339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o break; 140e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o len = end_ptr - name_ptr; 141e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o replace_name = get_subst_symbol(name_ptr, len, 0); 142e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o if (!replace_name) { 143e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o ptr = name_ptr; 144e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o continue; 145e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o } 14644339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o ent = fetch_subst_entry(replace_name); 14744339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (!ent) { 14844339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o fprintf(stderr, "Unfound expansion: '%s'\n", 14944339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o replace_name); 15044339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o ptr = end_ptr + 1; 15144339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o continue; 15244339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o } 15344339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o#if 0 15444339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o fprintf(stderr, "Replace name = '%s' with '%s'\n", 15544339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o replace_name, ent->value); 15644339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o#endif 157e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o ptr = name_ptr-1; 158e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o replace_string(ptr, end_ptr, ent->value); 159e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o } 160e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o /* 161e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o * Now do a second pass to expand ${FOO} 162e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o */ 163e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o ptr = line; 164e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o while (ptr) { 165e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o name_ptr = strchr(ptr, '$'); 166e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o if (!name_ptr) 167e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o break; /* No more */ 168e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o if (*(++name_ptr) != '{') { 169e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o ptr = name_ptr; 170e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o continue; 171e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o } 172e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o name_ptr++; 173e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o end_ptr = strchr(name_ptr, '}'); 174e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o if (!end_ptr) 175e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o break; 176e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o len = end_ptr - name_ptr; 177e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o replace_name = get_subst_symbol(name_ptr, len, '$'); 178e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o if (!replace_name) { 179e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o ptr = name_ptr; 180e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o continue; 181e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o } 182e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o ent = fetch_subst_entry(replace_name); 183e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o if (!ent) { 184e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o ptr = end_ptr + 1; 185e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o continue; 186e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o } 187e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o#if 0 188e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o fprintf(stderr, "Replace name = '%s' with '%s'\n", 189e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o replace_name, ent->value); 190e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o#endif 191e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o ptr = name_ptr-2; 192e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o replace_string(ptr, end_ptr, ent->value); 19344339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o } 19444339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o} 19544339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o 19644339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'ostatic void parse_config_file(FILE *f) 19744339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o{ 19844339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o char line[2048]; 19944339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o char *cp, *ptr; 20044339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o 20144339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o while (!feof(f)) { 20244339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o memset(line, 0, sizeof(line)); 20344339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (fgets(line, sizeof(line), f) == NULL) 20444339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o break; 20544339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o /* 20644339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o * Strip newlines and comments. 20744339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o */ 20844339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o cp = strchr(line, '\n'); 20944339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (cp) 21044339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o *cp = 0; 21144339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o cp = strchr(line, '#'); 21244339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (cp) 21344339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o *cp = 0; 21444339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o /* 21544339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o * Skip trailing and leading whitespace 21644339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o */ 21744339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o for (cp = line + strlen(line) - 1; cp >= line; cp--) { 21844339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (*cp == ' ' || *cp == '\t') 21944339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o *cp = 0; 22044339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o else 22144339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o break; 22244339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o } 22344339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o cp = line; 22444339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o while (*cp && isspace(*cp)) 22544339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o cp++; 22644339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o ptr = cp; 22744339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o /* 22844339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o * Skip empty lines 22944339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o */ 23044339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (*ptr == 0) 23144339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o continue; 23244339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o /* 23344339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o * Ignore future extensions 23444339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o */ 235e7549ca6280abe5ab5c1934ecfd7d132c7abeb59Theodore Ts'o if (*ptr == '@') 23644339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o continue; 23744339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o /* 23844339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o * Parse substitutions 23944339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o */ 24044339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o for (cp = ptr; *cp; cp++) 24144339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (isspace(*cp)) 24244339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o break; 24344339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o *cp = 0; 24444339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o for (cp++; *cp; cp++) 24544339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (!isspace(*cp)) 24644339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o break; 24744339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o#if 0 24844339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o printf("Substitute: '%s' for '%s'\n", ptr, cp); 24944339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o#endif 25044339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o add_subst(ptr, cp); 25144339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o } 25244339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o} 25344339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o 25444339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o/* 25544339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o * Return 0 if the files are different, 1 if the files are the same. 25644339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o */ 25744339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'ostatic int compare_file(const char *outfn, const char *newfn) 25844339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o{ 25945d2161466e32b3e67115951ab1eb7eef25c218aTheodore Ts'o FILE *old_f, *new_f; 26044339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o char oldbuf[2048], newbuf[2048], *oldcp, *newcp; 26144339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o int retval; 26244339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o 26345d2161466e32b3e67115951ab1eb7eef25c218aTheodore Ts'o old_f = fopen(outfn, "r"); 26445d2161466e32b3e67115951ab1eb7eef25c218aTheodore Ts'o if (!old_f) 26544339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o return 0; 26645d2161466e32b3e67115951ab1eb7eef25c218aTheodore Ts'o new_f = fopen(newfn, "r"); 26745d2161466e32b3e67115951ab1eb7eef25c218aTheodore Ts'o if (!new_f) 26844339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o return 0; 26944339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o 27044339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o while (1) { 27145d2161466e32b3e67115951ab1eb7eef25c218aTheodore Ts'o oldcp = fgets(oldbuf, sizeof(oldbuf), old_f); 27245d2161466e32b3e67115951ab1eb7eef25c218aTheodore Ts'o newcp = fgets(newbuf, sizeof(newbuf), new_f); 27344339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (!oldcp && !newcp) { 27444339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o retval = 1; 27544339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o break; 27644339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o } 27744339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (!oldcp || !newcp || strcmp(oldbuf, newbuf)) { 27844339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o retval = 0; 27944339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o break; 28044339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o } 28144339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o } 28245d2161466e32b3e67115951ab1eb7eef25c218aTheodore Ts'o fclose(old_f); 28345d2161466e32b3e67115951ab1eb7eef25c218aTheodore Ts'o fclose(new_f); 28444339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o return retval; 28544339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o} 28644339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o 28744339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o 28844339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o 28944339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o 29044339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'oint main(int argc, char **argv) 29144339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o{ 29244339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o char line[2048]; 29344339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o int c; 29444339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o FILE *in, *out; 29544339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o char *outfn = NULL, *newfn = NULL; 29644339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o int verbose = 0; 29744339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o 29844339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o while ((c = getopt (argc, argv, "f:v")) != EOF) { 29944339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o switch (c) { 30044339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o case 'f': 30144339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o in = fopen(optarg, "r"); 30244339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (!in) { 30344339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o perror(optarg); 30444339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o exit(1); 30544339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o } 30644339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o parse_config_file(in); 30744339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o fclose(in); 30844339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o break; 30944339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o case 'v': 31044339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o verbose++; 31144339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o break; 31244339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o default: 31344339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o fprintf(stderr, "%s: [-f config-file] [file]\n", 31444339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o argv[0]); 31544339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o break; 31644339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o } 31744339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o } 31844339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (optind < argc) { 31944339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o in = fopen(argv[optind], "r"); 32044339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (!in) { 32144339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o perror(argv[optind]); 32244339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o exit(1); 32344339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o } 32444339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o optind++; 32544339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o } else 32644339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o in = stdin; 32744339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o 32844339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (optind < argc) { 32944339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o outfn = argv[optind]; 33045d2161466e32b3e67115951ab1eb7eef25c218aTheodore Ts'o newfn = (char *) malloc(strlen(outfn)+20); 33144339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (!newfn) { 33244339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o fprintf(stderr, "Memory error! Exiting.\n"); 33344339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o exit(1); 33444339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o } 33544339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o strcpy(newfn, outfn); 33644339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o strcat(newfn, ".new"); 33744339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o out = fopen(newfn, "w"); 33844339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (!out) { 33944339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o perror(newfn); 34044339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o exit(1); 34144339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o } 34244339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o } else { 34344339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o out = stdout; 34444339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o outfn = 0; 34544339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o } 34644339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o 34744339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o while (!feof(in)) { 34844339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (fgets(line, sizeof(line), in) == NULL) 34944339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o break; 35044339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o substitute_line(line); 35144339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o fputs(line, out); 35244339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o } 35344339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o fclose(in); 35444339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o fclose(out); 35544339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (outfn) { 35644339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (compare_file(outfn, newfn)) { 35744339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (verbose) 35844339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o printf("No change, keeping %s.\n", outfn); 35944339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o unlink(newfn); 36044339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o } else { 36144339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o if (verbose) 36244339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o printf("Creating or replacing %s.\n", outfn); 36344339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o rename(newfn, outfn); 36444339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o } 36544339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o } 36644339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o return (0); 36744339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o} 36844339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o 36944339bdff87584b72a2ade7d3a1426e3335f2167Theodore Ts'o 370