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  1. /*
  2.  
  3.     @author: 		Alberto Jsé <guzzan0>
  4. 	@package:		pkgrmd - This package remove all dependences alone of a applications.
  5.  
  6. */
  7.  
  8. #include <stdlib.h>
  9. #include <stdio.h>
  10. #include <string.h>
  11. #include <sys/types.h>
  12. #include <sys/stat.h>
  13. #include <dirent.h>
  14.  
  15. #define VERSION "Dannie27"
  16.  
  17. void search_package(char *package_name);
  18. char *depends_parser(FILE *pkgfile_dir);
  19.  
  20. int main(int argc, char *argv[]) 
  21. {
  22. 	if (argc > 1) 
  23. 	{
  24. 		if (strncmp(argv[1], "--info", 6) == 0)
  25. 		{
  26. 			printf("Written by Alberto Jse <guzzan0>\nVersion: %s\n\nPlease report bug to guzzano.ve@gmail.com\n", VERSION);
  27. 		}
  28. 		else if (strncmp(argv[1], "--help", 6) == 0)
  29. 		{
  30. 			printf("Usage: pkgrmd <commands> or <package to remove>\nExample: pkgrmd wine, pkgrmd xorg, etc.\n\n");
  31. 			printf("Commands avaiable: \n\n--help (Show this help) \n--info (Show the current version and author)\n");
  32. 		}
  33. 		else
  34. 		{
  35. 			if ((strlen(argv[1])) > 0 && (strlen(argv[1])) < 25)
  36. 			{
  37. 				search_package(argv[1]);
  38. 			}
  39. 			else
  40. 			{
  41. 				puts("[pkgrmd] Maximum package name is 25");
  42. 			}
  43. 		}
  44. 	}
  45. 	else 
  46. 	{
  47. 		printf("[pkgrmd] Try \"pkgdmr --help\" for more information. \n");
  48. 	}
  49.  
  50. 	return 0;
  51. }
  52.  
  53. char *depends_parser(FILE *pkgfile_dir)
  54. {
  55. 	char character, last_character = '0', *string_depends = NULL, **depends_alone = NULL, *depends_p;
  56. 	int character_count = 0, memory_count = 1, position_check = 0;
  57.  
  58. 	while ((character = getc(pkgfile_dir)) != EOF)
  59. 	{
  60. 		if (character == '\n')
  61. 		{
  62. 			if ((strstr(string_depends, "Depends on:")))
  63. 			{
  64. 				string_depends[character_count] = '\0';
  65. 				depends_p = string_depends;
  66.  
  67. 				while (*depends_p != '\0')
  68. 				{
  69.  
  70. 					if (*depends_p == ':')
  71. 					{
  72. 						position_check = 1;
  73. 						depends_p++;
  74.  
  75. 						if (!isalpha(*depends_p)){}
  76. 						else
  77. 						{
  78. 							depends_p--;
  79. 						}
  80. 					}
  81. 					else if (position_check == 1)
  82. 					{
  83. 						printf("%c", *depends_p);
  84. 					}
  85.  
  86. 					depends_p++;
  87. 				}
  88. 				break;
  89. 			}
  90. 			else
  91. 			{
  92. 				character_count = 0; 
  93. 				memory_count = 1;
  94. 				string_depends = malloc(0);
  95. 			}
  96. 		}
  97. 		else
  98. 		{
  99.  
  100. 			string_depends = (char *) realloc(string_depends, memory_count);
  101. 			string_depends[character_count] = character;
  102.  
  103. 			character_count++;
  104. 			memory_count++;
  105. 		}
  106. 	}
  107.  
  108. 	if (string_depends)
  109. 		free(string_depends);
  110. }
  111.  
  112.  
  113. void search_package(char *package_name)
  114. {
  115. 	FILE* package_installed = fopen("/var/lib/pkg/db", "r");
  116.  
  117. 	char *package_n, package_file_lines[225];
  118. 	int package_install = 0, package_found = 0;
  119.  
  120. 	package_n = (char *) malloc(strlen(package_name)+2);
  121.  
  122. 	if (!package_n)
  123. 	{
  124. 		puts("Malloc can not create more space.");
  125. 		exit(EXIT_FAILURE);
  126. 	}
  127.  
  128. 	sprintf(package_n, "%s\n", package_name);
  129.  
  130. 	if (package_installed != NULL)
  131. 	{
  132. 		while (fgets(package_file_lines, sizeof(package_file_lines), package_installed) != NULL)
  133. 		{
  134. 			if (strcmp(package_file_lines, package_n) == 0)
  135. 			{
  136. 				package_install = 1;
  137. 				break;
  138. 			}
  139. 			else
  140. 			{
  141. 				package_install = 0;
  142. 			}
  143. 		}
  144. 		free(package_n);
  145. 	}
  146. 	else
  147. 	{
  148. 		puts("[pkgrmd] I can't open file: /var/lib/pkg/db - Sorry");
  149. 		exit(EXIT_FAILURE);
  150. 	}
  151.  
  152. 	fclose(package_installed);
  153.  
  154. 	if (package_install == 1)
  155. 	{
  156. 		DIR *ports_directory, *package_directory;
  157. 		struct dirent *structure_directory, *structure_package;
  158.  
  159. 		char ports_base[12] = "/usr/ports/", *package_directories = NULL;
  160.  
  161. 		if ((ports_directory = opendir(ports_base)) != NULL) 
  162. 		{
  163. 			while ((structure_directory = readdir(ports_directory)) != NULL)
  164. 			{
  165. 				if (*structure_directory->d_name == '.') 
  166. 					continue;
  167.  
  168. 				if (package_found == 1)
  169. 					break;
  170.  
  171. 				package_directories = (char *) malloc(strlen(ports_base)+strlen(structure_directory->d_name)+1);
  172. 				if (!package_directories)
  173. 				{
  174. 					puts("Malloc can't create more space.");
  175. 					exit(EXIT_FAILURE);
  176. 				}
  177.  
  178. 				sprintf(package_directories, "%s%s/", ports_base, structure_directory->d_name);
  179.  
  180. 				if ((package_directory = opendir(package_directories)) != NULL)
  181. 				{
  182. 					while ((structure_package = readdir(package_directory)) != NULL)
  183. 					{
  184. 						if (*structure_package->d_name == '.') 
  185. 							continue;
  186.  
  187. 						if (strcmp(package_name, structure_package->d_name) == 0)
  188. 						{
  189. 							FILE *pkgbuild;
  190. 							char *depends;
  191.  
  192. 							package_found = 1;
  193.  
  194. 							depends = (char *) malloc(strlen(package_directories)+strlen(structure_package->d_name)+9);
  195. 							if (!depends)
  196. 							{
  197. 								puts("Malloc can't create more space.");
  198. 								exit(EXIT_FAILURE);
  199. 							}
  200.  
  201. 							sprintf(depends, "%s%s/Pkgfile", package_directories, structure_package->d_name);
  202.  
  203. 							if ((pkgbuild = fopen(depends, "r")))
  204. 							{
  205. 								struct stat verify_file;
  206. 								stat(depends, &verify_file);
  207.  
  208. 								if (verify_file.st_size <= 0)
  209. 								{
  210. 									printf("[pkgrmd] The file: %s this in blank. Please verify and try again. \n", depends);
  211. 									exit(EXIT_FAILURE);
  212. 								}
  213. 								else if (verify_file.st_size > 0)
  214. 								{
  215. 									depends_parser(pkgbuild);
  216. 								}
  217.  
  218. 							fclose(pkgbuild);
  219. 							}
  220. 							else
  221. 							{
  222. 								printf("[pkgrmd] The package %s not have file pkgfile. Renew pkgfile with commands \"ports -u\" and try again. \n", structure_package->d_name);
  223. 							}
  224.  
  225. 							break;
  226. 						}
  227. 					}
  228. 				}
  229. 				else
  230. 				{
  231. 					printf("[pkgrmd] This error no is fatal. But I can't open dir: %s%s", package_directories, structure_package->d_name);
  232. 				}
  233. 			}
  234. 			closedir(ports_directory);
  235. 			closedir(package_directory);
  236. 		}
  237. 		else 
  238. 		{
  239. 			printf("[pkgrmd] I cant read directory: %s, you have installed prt-get?", ports_base);
  240. 		}
  241. 	}
  242. 	else
  243. 	{
  244. 		printf("[pkgrmd] The package %s not is installed. \n[pkgrmd] Please verify package with: prt-get search [name_package] \n", package_name);
  245. 	}
  246. }
Success #stdin #stdout 0.01s 1724KB
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[pkgrmd] Try "pkgdmr --help" for more information.
https://ideone.com/F97iS6
language:
C (gcc 8.3)
created:
11 years ago
visibility:
public

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