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#include "spm.h"
#include "url.h"
char **file_readlines(const char *filename, size_t start, size_t limit, ReaderFn *readerFn) {
FILE *fp = NULL;
char **result = NULL;
char *buffer = NULL;
size_t lines = 0;
if ((fp = fopen(filename, "r")) == NULL) {
perror(filename);
fprintf(SYSERROR);
return NULL;
}
// Allocate buffer
if ((buffer = calloc(BUFSIZ, sizeof(char))) == NULL) {
perror("line buffer");
fprintf(SYSERROR);
fclose(fp);
return NULL;
}
// count number the of lines in the file
while ((fgets(buffer, BUFSIZ - 1, fp)) != NULL) {
lines++;
}
if (!lines) {
free(buffer);
fclose(fp);
return NULL;
}
rewind(fp);
// Handle invalid start offset
if (start > lines) {
start = 0;
}
// Adjust line count when start offset is non-zero
if (start != 0 && start < lines) {
lines -= start;
}
// Handle minimum and maximum limits
if (limit == 0 || limit > lines) {
limit = lines;
}
// Populate results array
result = calloc(limit + 1, sizeof(char *));
for (size_t i = start; i < limit; i++) {
if (i < start) {
continue;
}
if (fgets(buffer, BUFSIZ - 1, fp) == NULL) {
break;
}
if (readerFn != NULL) {
int status = readerFn(i - start, &buffer);
// A status greater than zero indicates we should ignore this line entirely and "continue"
// A status less than zero indicates we should "break"
// A zero status proceeds normally
if (status > 0) {
i--;
continue;
} else if (status < 0) {
break;
}
}
result[i] = strdup(buffer);
memset(buffer, '\0', BUFSIZ);
}
free(buffer);
fclose(fp);
return result;
}
/**
*
* @param filename
* @return
*/
char **mirror_list(const char *filename) {
char **mirrors = NULL;
char **result = NULL;
size_t count;
// The configuration file isn't critical so if it isn't available, no big deal
if (exists(filename) != 0) {
return NULL;
}
mirrors = file_readlines(filename, 0, 0, NULL);
if (mirrors == NULL) {
return NULL;
}
for (count = 0; mirrors[count] != NULL; count++);
if (!count) {
return NULL;
}
result = calloc(count + 1, sizeof(char **));
for (size_t i = 0; mirrors[i] != NULL; i++) {
if (startswith(mirrors[i], "#") || isempty(mirrors[i])) {
continue;
}
result[i] = join((char *[]) {mirrors[i], SPM_GLOBAL.repo_target, NULL}, DIRSEPS);
free(mirrors[i]);
}
free(mirrors);
return result;
}
void mirror_list_free(char **m) {
if (m == NULL) {
return;
}
for (size_t i = 0; m[i] != NULL; i++) {
free(m[i]);
}
free(m);
}
void mirror_clone(Manifest *info, char *_dest) {
char *dest = NULL;
if (endswith(_dest, SPM_GLOBAL.repo_target) != 0) {
dest = strdup(_dest);
}
else {
dest = join((char *[]) {_dest, SPM_GLOBAL.repo_target, NULL}, DIRSEPS);
}
if (exists(dest) != 0 && mkdirs(dest, 0755) != 0) {
perror("Unable to create mirror directory");
fprintf(SYSERROR);
exit(1);
}
printf("Remote: %s\n", info->origin);
printf("Local: %s\n", dest);
for (size_t i = 0; i < info->records; i++) {
long response = 0;
char *archive = join((char *[]) {info->packages[i]->origin, SPM_GLOBAL.repo_target, info->packages[i]->archive, NULL}, DIRSEPS);
char *path = join((char *[]) {dest, info->packages[i]->archive, NULL}, DIRSEPS);
if (exists(path) == 0) {
char *checksum = sha256sum(path);
if (strcmp(checksum, info->packages[i]->checksum_sha256) == 0) {
printf("Skipped: %s\n", archive);
free(checksum);
free(archive);
free(path);
continue;
}
}
printf("Fetch: %s\n", archive);
if ((response = fetch(archive, path)) >= 400) {
fprintf(stderr, "WARNING: HTTP(%ld, %s): %s\n", response, http_response_str(response), archive);
}
free(archive);
free(path);
}
// Now fetch a copy of the physical manifest
char *datafile = join((char *[]) {dest, basename(info->origin), NULL}, DIRSEPS);
long response = 0;
if ((response = fetch(info->origin, datafile) >= 400)) {
fprintf(stderr, "WARNING: HTTP(%ld, %s): %s\n", response, http_response_str(response), info->origin);
}
free(dest);
free(datafile);
printf("done!\n");
}
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