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Update 21.01.2016-17:56
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DimaSmirnov committed Jan 21, 2016
1 parent 2fcfc03 commit 55e7fab
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163 changes: 83 additions & 80 deletions Actions.h
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Original file line number Diff line number Diff line change
@@ -1,45 +1,41 @@
int DowngradePackage( char *package) {
tmpchar=NULL;

int isincache = IsPackageInCache(package); // Here also parsing pacman.log and using flag actions.package_never_upgraded
int isincache = IsPackageInLogs(package); // Here also parsing pacman.log and using flag actions.package_never_upgraded
if (isincache) {
if (!quiet_downgrade) printf("Downgrading from Cache, to version %s\n",install_version);
//printf ("command: %s\n",install_command); //DEBUG
if (!silent) { sprintf(tmp_string, "Downgrading from Cache, to version %s\n",install_version); dgr_output(tmp_string); }
system(install_command);
return 0;
}
if (pkg_never_upgraded==1) {
strcpy(install_version,installed_pkg_ver);
ret = IsPackageInArm(package, install_version);
if (arm_pkgs[ret].link) {
if (!quiet_downgrade) printf("Downgrade %s from ARM to version %s\n", package,arm_pkgs[ret+2].version);
strcpy(install_command,"sudo pacman -U "); strcat(install_command,arm_pkgs[ret+2].link);
//printf ("command: %s\n",install_command); //DEBUG
system(install_command);
return 0;
}
strcpy(install_version,installed_pkg_ver);
ret = IsPackageInArm(package, install_version);
if (arm_pkgs[ret].link) {
if (!silent) { sprintf(tmp_string, "Downgrade %s from ARM to version %s\n", package,arm_pkgs[ret+2].version); dgr_output(tmp_string); }
strcpy(install_command,"sudo pacman -U "); strcat(install_command,arm_pkgs[ret+2].link);
system(install_command);
return 0;
}
return 1;
return 1;
}
int GetChoiseForPackage( char *package) {
char* GetChoiseForPackage( char *package) {
tmpint=0;
if (init) {
if(!quiet_downgrade) printf("Pacman not initialized! Interrupted\n");
return -1;
if(!silent) printf("Pacman not initialized! Interrupted\n");
return (char*)-1;
}
ret = CheckDowngradePossibility(package);
if (ret<0) return -1;
ret = IsPackageInCache(package);
if (ret<0) return (char*)-1;

for (int i=1;i<=MAX_PKGS_FROM_ARM_FOR_USER && i<=pkgs_in_arm;i++) {
printf("%d: %s-%s", i, arm_pkgs[i].name, arm_pkgs[i].version);
if (!strcmp(arm_pkgs[i].version, installed_pkg_ver)) printf(" [installed]\n");
else if (!strcmp(arm_pkgs[i].version, install_version)) { printf(" [will be installed by default]\n"); tmpint=i; }
else printf("\n");
sprintf(tmp_string,"%s-%s", arm_pkgs[i].name, arm_pkgs[i].version);
ret = IsPackageInCache(tmp_string);
sprintf(tmp_string, "%d: %s-%s", i, arm_pkgs[i].name, arm_pkgs[i].version); dgr_output(tmp_string);
if (!strcmp(arm_pkgs[i].version, installed_pkg_ver)) dgr_output(" [installed]\n");
else if (ret==1) dgr_output(" (from cache)\n");
else dgr_output(" (from ARM)\n");
}
printf (">> Please enter package number, [q] to quit ");
if (tmpint>0) printf(", [d] to install default package: ");
scanf ("%s",package_number);
return 0;
dgr_output (">> Please enter package number, [q] to quit ");
scanf ("%s",tmp_string);
return tmp_string;
}
int IsPackageAvailable(char *package) {
packagesinarm = ReadArm(package);
Expand All @@ -52,33 +48,25 @@ int IsPackageAvailable(char *package) {
}
int CheckDowngradePossibility(char *package) {
ret = IsPackageAvailable(package);
if (ret==2) {
if(!quiet_downgrade) printf("Package '%s' not available. Please check package name\n", package);
return -1;
}
else if (ret==1) {
if(!quiet_downgrade) printf("Package '%s' not installed.\n", package);
return -1;
}
if (ret==0) return 0; // pkg found, no need to check AUR

ret = IsPackageInAur(package);
if (ret>0) { // Package in aur
if(!quiet_downgrade) printf("Package '%s' in AUR. Downgrade impossible.\n", package);
return -1;
if (ret==2) { // пакета нет в АРМ
int ret1 = IsPackageInAur(package); // тогда проверяем АУР
if (ret1>0) { // Package in aur, terminate
if(!silent) { sprintf(tmp_string, "Package '%s' in AUR. Downgrade impossible.\n", package); dgr_output(tmp_string); return -1; }
}
else if(ret1<0) { // inet error while ARM read
if(!silent) { dgr_output("Please check you internet connection. Can`t read AUR\n"); return -1; }
}
else { // Пакета нет в АРМ и нет в АУР
if(!silent) { sprintf(tmp_string, "Package '%s' not available. Please check package name\n", package); dgr_output(tmp_string); return -1; }
}
}
else if(ret<0) { // inet connection error
printf ("Please check you internet connection. Can`t read AUR\n");
return -1;
else if (ret==1) { // Пакет не установлен
if(!silent) { sprintf(tmp_string, "Package '%s' not installed.\n", package); dgr_output(tmp_string); return -1; }
}
return 0;
}
int IsPackageInCache(char *package) {
char full_path_to_packet[300];

if(sizeof(void*) == 4) tmpchar = (char *)"i686"; // architecture,
else if (sizeof(void*) == 8) tmpchar = (char *)"x86_64";
pkg_never_upgraded = 1;
int IsPackageInLogs(char *package) {

for (;pacmanlog_length>0;pacmanlog_length--) {
if (!strcmp(package,pkgs[pacmanlog_length].name) && !strcmp("upgraded",pkgs[pacmanlog_length].action)) { // found necessary package
if (strcmp(pkgs[pacmanlog_length].cur_version, pkgs[pacmanlog_length].prev_version)) { // if the same version - search next
Expand All @@ -87,17 +75,15 @@ int IsPackageInCache(char *package) {
strcat (full_path_to_packet,"-");
strcat (full_path_to_packet,pkgs[pacmanlog_length].prev_version);
strcat (full_path_to_packet,"-");
strcat (full_path_to_packet,tmpchar);
strcat (full_path_to_packet,architecture);
strcat (full_path_to_packet,".pkg.tar.xz");
//printf("%s\n",full_path_to_packet); //DEBUG
pkg_never_upgraded = 0; // Package upgraded at least 1 time
break;
break; // Package upgraded at least 1 time
}
}
}
//printf("1: %s\n",full_path_to_packet); //DEBUG
strcpy(install_version,pkgs[pacmanlog_length].prev_version);
//printf("2: %s\n",full_path_to_packet); //DEBUG
if(access(full_path_to_packet, F_OK) != -1) { // previously version available in cache
strcpy(tmp_string,"sudo pacman -U "); // install
strcat(tmp_string,full_path_to_packet);
Expand All @@ -107,6 +93,14 @@ int IsPackageInCache(char *package) {
}
else return 0;
}
int IsPackageInCache(char *package) {

sprintf(full_path_to_packet,"/var/cache/pacman/pkg/%s-%s.pkg.tar.xz", package, architecture);
//printf("%s\n",full_path_to_packet); //DEBUG
if(access(full_path_to_packet, F_OK) != -1) { return 1; }// package in cache
else return 0;
}

size_t curl_handler(char *data, size_t size, size_t nmemb, void *userp) {

size_t realsize = size * nmemb;
Expand All @@ -130,16 +124,16 @@ int IsPackageInAur(char *package) {
curl_easy_setopt(curl, CURLOPT_USERAGENT, "libcurl-agent/1.0");
result = curl_easy_perform(curl);
if(result != CURLE_OK) {
printf ("Please check you internet connection. AUR reading error\n");
dgr_output ("Please check you internet connection. AUR reading error\n");
return -1; // Exit with error
}
//// Parsing AUR response
cJSON *root = cJSON_Parse(chunk.memory);
cJSON *item = cJSON_GetObjectItem(root,"results");
for (int i=0;i<cJSON_GetArraySize(item);i++) {
cJSON *subitem=cJSON_GetArrayItem(item,i);
tmpchar= cJSON_GetObjectItem(subitem,"Name")->valuestring;
if (!strcmp(tmpchar,package)) return 1; // package in AUR
str= cJSON_GetObjectItem(subitem,"Name")->valuestring;
if (!strcmp(str,package)) return 1; // package in AUR
}
cJSON_Delete(root);
curl_easy_cleanup(curl);
Expand Down Expand Up @@ -210,51 +204,53 @@ int ReadArm(char *package) {
curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
result = curl_easy_perform(curl);
if(result != CURLE_OK) {
printf ("Please check you internet connection. ARM reading error\n");
dgr_output ("Please check you internet connection. ARM reading error\n");
return -1; // Exit with error
}
curl_easy_cleanup(curl);
curl_global_cleanup();
counter=0;
pointer = chunk.memory;
str = chunk.memory;

char *pch = strchr(pointer,'\n');
char *pch = strchr(str,'\n');
while (pch!=NULL) { counter++; pch=strchr(pch+1,'\n'); }
//if(!quiet_downgrade) printf("1. Packages in ARM: %d (with testing)\n",counter); // DEBUG
arm_pkgs = realloc(arm_pkgs, counter*sizeof(struct arm_packs)+sizeof(struct arm_packs));
//printf ("::: Memory locked for %d entries\n\n", counter); //DEBUG
//if(!quiet_downgrade) { sprintf(tmp_string, "1. Packages in ARM: %d (with testing)\n",counter); dgr_output(tmp_string); } // DEBUG
arm_pkgs = realloc(arm_pkgs, (counter+1)*sizeof(struct arm_packs));
pkgs_in_arm = counter;
if (!pkgs_in_arm) return 0;
if (pkgs_in_arm>MAX_PKGS_FROM_ARM_FOR_USER) pkgs_in_arm = MAX_PKGS_FROM_ARM_FOR_USER;
counter=0;
pointer = chunk.memory;
str = strtok(pointer, "\n");
str = chunk.memory;
str = strtok(str, "\n");
strcpy(arm_pkgs[counter].full_path,str);
counter++;
for (;str = strtok(NULL, "\n"); counter++) { strcpy(arm_pkgs[counter].full_path,str); }
for (;str = strtok(NULL, "\n"); counter++) {
strcpy(arm_pkgs[counter].full_path,str);
//printf("%d: string: %s\n",counter, arm_pkgs[counter].full_path); // DEBUG
}
counter=0;
int notest_cntr=1;
while (counter<pkgs_in_arm) { // Get info about packages in ARM
strcpy(full,arm_pkgs[counter].full_path);
str = strtok(full, "|");
str = strtok(arm_pkgs[counter].full_path, "|");
if (!strstr(str,"testing")) { // Exclude packages from `testing`
strcpy(arm_pkgs[notest_cntr].repository,str); //printf("%d: Repo: %s\n",notest_cntr, arm_pkgs[notest_cntr].repository); // DEBUG
//printf("%d: string: %s\n",notest_cntr, arm_pkgs[counter].full_path); // DEBUG
strcpy(arm_pkgs[notest_cntr].repository,str);
str = strtok(NULL, "|");
strcpy(arm_pkgs[notest_cntr].name,str); //printf(", name: %s",arm_pkgs[i].name); //DEBUG
strcpy(arm_pkgs[notest_cntr].name,str);
str = strtok(NULL, "|");
str = strtok(NULL, "|");
strcpy(arm_pkgs[notest_cntr].version,str); //printf(", version: %s",arm_pkgs[i].version);
strcpy(arm_pkgs[notest_cntr].version,str);
str = strtok(NULL, "|");
strcpy(arm_pkgs[notest_cntr].link,str); //printf(", link: %s\n",arm_pkgs[i].link);
strcpy(arm_pkgs[notest_cntr].link,str);
str = strtok(NULL, "|");
arm_pkgs[notest_cntr].pkg_release=atoi(str);
if (notest_cntr==MAX_PKGS_FROM_ARM_FOR_USER) break;
notest_cntr++;
}
counter++;
}
pkgs_in_arm = notest_cntr-1;
//if(!quiet_downgrade) printf("2. Packages in ARM: %d (without testing)\n",pkgs_in_arm); // DEBUG
if(chunk.memory) free(chunk.memory);
//if(!quiet_downgrade) { sprintf(tmp_string, "2. Packages in ARM: %d (without testing)\n",pkgs_in_arm); dgr_output(tmp_string); } // DEBUG
free(chunk.memory);

return pkgs_in_arm;
}
Expand All @@ -264,8 +260,6 @@ int IsPackageInArm( char *package, char *version) {

sprintf(t_pack,"%s-%s",package,version);
for(tmpint=0;strlen(arm_pkgs[tmpint].full_path)>0;tmpint++) {
//printf("%s\n",arm_pkgs[tmpint].full_path); // DEBUG
//printf("%s\n",t_pack); // DEBUG
if (strstr(arm_pkgs[tmpint].full_path,t_pack)) {
arm_flag=1;
break;
Expand All @@ -274,19 +268,27 @@ int IsPackageInArm( char *package, char *version) {
if (arm_flag==1) return tmpint;
else return 0;
}
int dgr_output(char *string) {
printf("%s",string);

return 0;
}
int Initialization(char *package) {

arm_pkgs = calloc(1, sizeof(struct arm_packs));

openlog("downgrader", LOG_PID|LOG_CONS, LOG_USER);
alpm_handle = NULL;
alpm_handle = alpm_initialize("/","/var/lib/pacman/",0);
if(!alpm_handle) {
printf("Libalpm initialize error!\n");
dgr_output("Libalpm initialize error!\n");
return 1;
}
db = alpm_get_localdb(alpm_handle);
pkg = alpm_db_get_pkg(db,(const char*)package);
pkgname = alpm_pkg_get_name(pkg);

if(sizeof(void*) == 4) architecture = (char *)"i686"; // architecture of machine
else if (sizeof(void*) == 8) architecture = (char *)"x86_64";

ReadPacmanLog();

Expand All @@ -296,5 +298,6 @@ int Deinitialization() {
alpm_release(alpm_handle);
free (pkgs);
free (arm_pkgs);
closelog();
return 0;
}
4 changes: 2 additions & 2 deletions PKGBUILD
View file
Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
# Author: Dmitriy Smirnov <other@igus.lv>
pkgname=downgrader
pkgver=1.8.0
pkgrel=7
pkgver=1.9.0
pkgrel=1
pkgdesc="Powerful packages downgrader for Archlinux. Works with libalpm, ARM and pacman logs"
arch=('i686' 'x86_64')
license=("GPL")
Expand Down
2 changes: 2 additions & 0 deletions TODO
View file
Original file line number Diff line number Diff line change
@@ -0,0 +1,2 @@
1. Multiple packages downgrade
2. History of downgrading
51 changes: 22 additions & 29 deletions main.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -5,10 +5,11 @@
#include <alpm.h>
#include <alpm_list.h>
#include <curl/curl.h>
#include <syslog.h>
#include "cJSON.h"

#define MAX_PKGS_FROM_ARM_FOR_USER 30
#define VERSION "1.8.0-7"
#define VERSION "1.9.0-1"

#include "variables.h"
#include "Interface.h"
Expand All @@ -17,50 +18,42 @@
int main(int argc, char **argv) {
char *package;
int param;
int quiet_downgrade=show_list=0, list_downgrade=0;

int quiet_downgrade=listing=0;
if (argc==2) package = argv[1];
else if (argc==3) package = argv[2];
else { ShowHelpWindow(); return 0; }
while ((param = getopt (argc, argv, "q:hl:")) != -1)
switch (param) {
case 'h':{ // help
ShowHelpWindow();
return 0;
}
case 'q':{ // Quiet downgrade (test option)
quiet_downgrade = 1;
break;
}
case 'l':{ // Show list of possible packages for downgrade
show_list = 1;
break;
}
case 'h':{ ShowHelpWindow(); return 0; }
case 'q':{ silent = 1; break; }
case 'l':{ listing = 1; break; }
}
init = Initialization(package);
if (init) return -1;

if (show_list) { // Show possible packages list when downgrade
if (listing) { // Show possible packages list when downgrade
int pac_num;
printf ("\033[1;%dm Downgrade package: %s \033[0m \n", 31, package);
show_list = show_list;
int ret = GetChoiseForPackage(package);
sprintf(tmp_string,"Downgrade package: %s",package);
syslog(LOG_INFO, tmp_string);
sprintf (full, "\033[1;%dm %s \033[0m \n", 31, tmp_string);
dgr_output(full);
str = GetChoiseForPackage(package);
if (ret<0) { Deinitialization(); return 0; }

if (!strcmp(package_number,"d")) pac_num = tmpint;
else if (!strcmp(package_number,"q")) return 0;
else pac_num = atoi(package_number);
else if (!strcmp(str,"q")) return 0;
else pac_num = atoi(str);
strcpy(install_command,"sudo pacman -U "); strcat(install_command, arm_pkgs[pac_num].link);
system(install_command);
}
else if (package) { // Downgrade single package
if (init) {
if(!quiet_downgrade) printf("Pacman not initialized! Interrupted\n");
return 1;
}
if(!quiet_downgrade) printf ("\033[1;%dm Downgrade package: %s \033[0m \n", 31, package);
sprintf(tmp_string,"Downgrade package: %s",package);
syslog(LOG_INFO, tmp_string);
sprintf (full, "\033[1;%dm %s \033[0m \n", 31, tmp_string);
dgr_output(full);
ret = CheckDowngradePossibility(package);
if (ret<0) { Deinitialization(); return 0; }
if (!quiet_downgrade) printf ("Installed version: %s\n",installed_pkg_ver);

if (!quiet_downgrade) { sprintf (tmp_string, "Installed version: %s\n",installed_pkg_ver); dgr_output(tmp_string);}
int down_result = DowngradePackage(package);
}
return 0;
Expand Down
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