int FillPkgDataFromPackage(PkgData *Data, char *filename)
{
int i = 0, j = 0, end = 0;
i = end = strlen(filename);
/* Get build and extension */
for (;filename[i] != '-' && i>0;i--) ;
if (i == 0) return 1;
i++;
/* While we are not on a ., it is part of the build */
for (j=i;filename[j]!='.' && j<end; j++) ;
if (j == end || j == i) return 1;
strncpy(Data->build, filename+i, j-i);
/* From the . to the end we are in the extension */
strncpy(Data->extension, filename+j+1, end-j);
/* Now, save the arch */
i -= 2;
end = i;
for (;filename[i]!= '-' && i>0;i--);
if (i==0 || i == end) return 1;
j = i-1;
i++;
strncpy(Data->arch, filename+i, end-i+1);
/* Now, save the version */
i -= 2;
end = i;
for (;filename[i]!= '-' && i>0;i--);
if (i==0) return 1;
j = i-1;
i++;
strncpy(Data->version, filename+i, end-i+1);
/* Now save the name */
if (j == 0) return 1;
strncpy(Data->name, filename, j+1);
/* The link */
sprintf(Data->link, "%s/%s", link_pkgs, filename);
/* Get the hash */
if (GiveMeHash(filename, Data->crc)) {
fprintf(stderr, "Error aquiring crc32 from file [%s]\n", filename);
return 1;
}
return 0;
}
/**
* This function downloads a package from the internet looking for its mirrors calling the SearchLinkForPackage
* @param name A package name
* @param out Since this function may get called by InstallPkg, the full path to the package downloaded will be saved here. If null is given, this will not change.
* @return If no error ocurr, 0 is returned. If the package doesn't exists in any mirror, 1 is returned. In case of error, -1 (And an error message is issued)
*/
int DownloadPkg(char *name, char *out)
{
ListOfLinks Links;
char filename[PATH_MAX], pkgcrc[32];
int i = 0, fd = 0;
char *MIRROR = NULL;
/* Initialize everything up */
memset(&Links, 0, sizeof(ListOfLinks));
/* Search for the package's links */
/* If there is no, 1 is returned, so we leave here */
if ((MIRROR = getenv("MIRROR"))) {
if (SearchLinkForPackage(name, &Links, MIRROR))
return 1;
}
else if (SearchLinkForPackage(name, &Links, NULL))
return 1;
if (Links.index > 1)
i = GetLinkFromInput(&Links);
sprintf(filename, "%s/%s#%s#%s#%s.%s", PACKAGES_DIRECTORY, Links.name[i], Links.version[i], Links.arch[i], Links.build[i], Links.extension[i]);
/* If the output already exist and the CRC is ok, then great, we already have it, so there's no need to download it again */
if ((fd = open(filename, O_RDONLY)) >= 0) {
close(fd);
if (GiveMeHash(filename, pkgcrc) == -1) {
freeLinks(&Links);
return -1;
}
if (strcmp(pkgcrc, Links.crcs[i]))
fprintf(stderr, "CRC error, Downloading the package again...\n");
else {
/* Great, it's already installed, so we leave */
if (out)
strcpy(out, filename);
freeLinks(&Links);
return 0;
}
}
/* Download the link */
if (Download(Links.links[i], filename) == -1) {
freeLinks(&Links);
return -1;
}
if (out)
strcpy(out, filename);
/* Get the link hash */
if (GiveMeHash(filename, pkgcrc) == -1) {
freeLinks(&Links);
return -1;
}
/* Does the link hash match with the one given in the database? */
if (strcmp(pkgcrc, Links.crcs[i])) {
freeLinks(&Links);
fprintf(stderr, "CRC error, try to download your package again\n");
return -1;
}
/* Great, we're cool, so we leave */
freeLinks(&Links);
return 0;
}
/**
* This function installs a package by calling ExtractPackage to extract it and InsertPkgDB to insert the package in PACKAGES and FILESPKG tables
* @param name A package name
* @return If no error ocurr, 0 is returned. If the package is already installed, 1 is returned (And a message is issued). In case of error, -1 (And an error message is issued)
*/
int InstallPkg(char *package)
{
char *ptr_name = NULL, *init_path = NULL, *input = NULL;
char pkgfullpathname[PATH_MAX];
char PackageOrig[PATH_MAX];
int fd = 0;
PkgData Data;
/* Save locations and initialize the package structure */
strncpy(PackageOrig, package, PATH_MAX);
PackageOrig[strlen(package)>PATH_MAX?PATH_MAX:strlen(package)] = '\0';
init_path = getcwd(malloc(PATH_MAX), PATH_MAX);
memset(&Data, '\0', sizeof(PkgData));
/* Does it fisically exist? */
if ((fd = open(package, O_RDONLY)) < 0) {
/* Ok, the package doesn't exists, let's go for a mirror */
if (DownloadPkg(package, pkgfullpathname) != 0) {
free(init_path);
return -1;
}
}
else {
close(fd);
/* Get the full pathname instead of its relative name */
if (GetFileFullPath(package, pkgfullpathname)) {
fprintf(stderr, "Failed to install %s\n", package);
return -1;
}
}
ptr_name = basename(pkgfullpathname);
/* Switch to HOME_ROOT */
if (chdir(HOME_ROOT)) {
fprintf(stderr, "Can't go to %s (%s)\n", HOME_ROOT, strerror(errno));
free(init_path);
return -1;
}
/* Fill the package structure according to the package name */
if (FillPkgDataFromPackage(&Data, ptr_name)) {
fprintf(stdout, "Wrong package name format. It should be \"" PACKAGE_NAME_FORMAT "\"\n");
chdir(init_path);
return -1;
}
/* Open the database */
if (sqlite3_open(dbname, &Database)) {
fprintf(stderr, "Failed to open database %s (%s)\n", dbname, sqlite3_errmsg(Database));
chdir(init_path);
free(init_path);
return -1;
}
/* Check if it is already installed */
if (ExistsPkg(&Data)) {
fprintf(stderr, "Package %s already installed\n", PackageOrig);
chdir(init_path);
free(init_path);
return 1;
}
/* Get the package hash so we can register it in the database */
if (GiveMeHash(pkgfullpathname, Data.crc) == -1) {
chdir(init_path);
free(init_path);
return -1;
}
/* Extract the package itself */
if (ExtractPackage(pkgfullpathname, &Data) == -1) {
chdir(init_path);
free(init_path);
return -1;
}
PostInstall();
/* Register the package in the database */
InsertPkgDB(&Data);
/* Clean everything up */
sqlite3_close(Database);
chdir(init_path);
if (!noreadme) {
printf("Press intro to continue");
getline(&input, (size_t *)&fd, stdin);
free(input);
}
fprintf(stdout, "Package %s installed\n", PackageOrig);
return 0;
}
