sacc

sacc (saccomys): simple gopher client.
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commit d2146543349ef8bde18732075dff69de5fd346a3
parent 92b222eb21149fa7fcd4044f53b2139d10527a1a
Author: Quentin Rameau <quinq@fifth.space>
Date:   Tue, 18 Jul 2017 14:29:19 +0200

Download images to temporary file and plumb them

Fix downloaditem() return value

Diffstat:
common.h | 1+
sacc.c | 65+++++++++++++++++++++++++++++++++++++++++++++--------------------
2 files changed, 46 insertions(+), 20 deletions(-)

diff --git a/common.h b/common.h @@ -10,6 +10,7 @@ struct item { char *host; char *port; char *raw; + char *tag; void *dat; Item *entry; }; diff --git a/sacc.c b/sacc.c @@ -97,6 +97,7 @@ clearitem(Item *item) { Dir *dir; Item **items; + char *tag; size_t i; if (!item) @@ -112,6 +113,11 @@ clearitem(Item *item) clear(&item->dat); } + if ((tag = item->tag) && + !strncmp(tag, "/tmp/sacc/img-", 14) && strlen(tag) == 20) + unlink(tag); + + clear(&item->tag); clear(&item->raw); } @@ -355,31 +361,33 @@ connectto(const char *host, const char *port) } static int -downloaditem(Item *item) +downloaditem(Item *item, int dest) { char buf[BUFSIZ], *path, *file; ssize_t r, w; mode_t mode = S_IRUSR|S_IWUSR|S_IRGRP; - int sock, dest; + int sock; - if (file = strrchr(item->selector, '/')) - ++file; - else - file = item->selector; + if (dest < 0) { + if (file = strrchr(item->selector, '/')) + ++file; + else + file = item->selector; - if (path = uiprompt("Download file to [%s]: ", file)) - path[strlen(path)-1] = '\0'; - else - path = xstrdup(file); + if (path = uiprompt("Download file to [%s]: ", file)) + path[strlen(path)-1] = '\0'; + else + path = xstrdup(file); - if ((dest = open(path, O_WRONLY|O_CREAT|O_EXCL, mode)) < 0) { - printf("Can't open destination file %s: %s\n", - path, strerror(errno)); - errno = 0; - free(path); - return 0; + item->tag = path; + + if ((dest = open(path, O_WRONLY|O_CREAT|O_EXCL, mode)) < 0) { + printf("Can't open destination file %s: %s\n", + path, strerror(errno)); + errno = 0; + return 0; + } } - free(path); sock = connectto(item->host, item->port); sendselector(sock, item->selector); @@ -398,7 +406,7 @@ downloaditem(Item *item) close(dest); close(sock); - return (r == 0 && w > 0); + return (r == 0 && w == 0); } static int @@ -452,6 +460,20 @@ plumb(char *url) } static int +displayimg(Item *item) +{ + int tmpfd; + + item->tag = xstrdup("/tmp/sacc/img-XXXXXX"); + + if ((tmpfd = mkstemp(item->tag)) < 0) + die("mkstemp: %s: %s", item->tag, strerror(errno)); + + if (downloaditem(item, tmpfd)) + plumb(item->tag); +} + +static int dig(Item *entry, Item *item) { if (item->raw) /* already in cache */ @@ -484,7 +506,7 @@ dig(Item *entry, Item *item) case '9': case 'g': case 'I': - if (!downloaditem(item)) + if (!displayimg(item)) return 0; break; default: @@ -597,7 +619,7 @@ moldentry(char *url) entry->host = host; entry->port = port; entry->entry = entry; - entry->raw = entry->dat = NULL; + entry->raw = entry->tag = entry->dat = NULL; return entry; } @@ -606,6 +628,7 @@ static void cleanup(void) { clearitem(mainentry); + rmdir("/tmp/sacc"); free(mainentry); free(mainurl); uicleanup(); @@ -616,6 +639,8 @@ setup(void) { setenv("PAGER", "more", 0); atexit(cleanup); + if (mkdir("/tmp/sacc", S_IRWXU) < 0 && errno != EEXIST) + die("mkdir: %s: %s", "/tmp/sacc", errno); uisetup(); }