/* -*- mode: c; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: t -*-
+ * vim: ts=4 sw=4 noet ai cindent syntax=c
*
* Conky, a system monitor, based on torsmo
*
* Please see COPYING for details
*
* Copyright (c) 2004, Hannu Saransaari and Lauri Hakkarainen
- * Copyright (c) 2005-2009 Brenden Matthews, Philip Kovacs, et. al.
+ * Copyright (c) 2005-2010 Brenden Matthews, Philip Kovacs, et. al.
* (see AUTHORS)
* All rights reserved.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
- * vim: ts=4 sw=4 noet ai cindent syntax=c
- *
*/
#include "conky.h"
#include <netinet/in.h>
#define BUFLEN 512
-#define PORT 7634
+#define DEFAULT_PORT "7634"
+#define DEFAULT_HOST "127.0.0.1"
+
+static char *hddtemp_host = NULL;
+static char *hddtemp_port = NULL;
-char buf[BUFLEN];
+static struct hdd_info {
+ struct hdd_info *next;
+ char *dev;
+ short temp;
+ char unit;
+} hdd_info_head = {
+ .next = NULL,
+};
-int scan_hddtemp(const char *arg, char **dev, char **addr, int *port)
+void set_hddtemp_host(const char *host)
{
- char buf1[32], buf2[64];
- int n, ret;
+ if (hddtemp_host)
+ free(hddtemp_host);
+ hddtemp_host = strdup(host);
+}
- if (!arg)
- return 1;
+void set_hddtemp_port(const char *port)
+{
+ if (hddtemp_port)
+ free(hddtemp_port);
+ hddtemp_port = strdup(port);
+}
- if ((ret = sscanf(arg, "%31s %63s %d", buf1, buf2, &n)) < 1)
- return 1;
+static void __free_hddtemp_info(struct hdd_info *hdi)
+{
+ if (hdi->next)
+ __free_hddtemp_info(hdi->next);
+ free(hdi->dev);
+ free(hdi);
+}
+
+static void free_hddtemp_info(void)
+{
+ DBGP("free_hddtemp_info() called");
+ if (!hdd_info_head.next)
+ return;
+ __free_hddtemp_info(hdd_info_head.next);
+ hdd_info_head.next = NULL;
+}
+
+static void add_hddtemp_info(char *dev, short temp, char unit)
+{
+ struct hdd_info *hdi = &hdd_info_head;
- if (strncmp(buf1, "/dev/", 5)) {
- strncpy(buf1 + 5, buf1, 32 - 5);
- strncpy(buf1, "/dev/", 5);
+ DBGP("add_hddtemp_info(%s, %d, %c) being called", dev, temp, unit);
+ while (hdi->next)
+ hdi = hdi->next;
+
+ hdi->next = malloc(sizeof(struct hdd_info));
+ memset(hdi->next, 0, sizeof(struct hdd_info));
+ hdi->next->dev = strdup(dev);
+ hdi->next->temp = temp;
+ hdi->next->unit = unit;
+}
+
+static char *fetch_hddtemp_output(void)
+{
+ int sockfd;
+ const char *dst_host, *dst_port;
+ char *buf = NULL;
+ int buflen, offset = 0, rlen;
+ struct addrinfo hints, *result, *rp;
+ int i;
+
+ dst_host = hddtemp_host ? hddtemp_host : DEFAULT_HOST;
+ dst_port = hddtemp_port ? hddtemp_port : DEFAULT_PORT;
+
+ memset(&hints, 0, sizeof(hints));
+ hints.ai_family = AF_INET; /* XXX: hddtemp has no ipv6 support (yet?) */
+ hints.ai_socktype = SOCK_STREAM;
+
+ if ((i = getaddrinfo(dst_host, dst_port, &hints, &result))) {
+ NORM_ERR("getaddrinfo(): %s", gai_strerror(i));
+ return NULL;
}
- *dev = strndup(buf1, text_buffer_size);
- if (ret >= 2) {
- *addr = strndup(buf2, text_buffer_size);
- } else {
- *addr = strndup("127.0.0.1", text_buffer_size);
+ for (rp = result; rp; rp = rp->ai_next) {
+ sockfd = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol);
+ if (sockfd == -1)
+ continue;
+ if (connect(sockfd, rp->ai_addr, rp->ai_addrlen) != -1)
+ break;
+ close(sockfd);
+ }
+ if (!rp) {
+ NORM_ERR("could not connect to hddtemp host");
+ goto GET_OUT;
}
- if (ret == 3) {
- *port = n;
- } else {
- *port = PORT;
+ buflen = 1024;
+ buf = malloc(buflen);
+ while ((rlen = recv(sockfd, buf + offset, buflen - offset - 1, 0)) > 0) {
+ offset += rlen;
+ if (buflen - offset < 1) {
+ buflen += 1024;
+ buf = realloc(buf, buflen);
+ }
}
+ if (rlen < 0)
+ perror("recv");
- return 0;
+ buf[offset] = '\0';
+
+ close(sockfd);
+GET_OUT:
+ freeaddrinfo(result);
+ return buf;
}
/* this is an iterator:
* set line to NULL in consecutive calls to get the next field
- * returns "<dev><unit><val>" or NULL on error
+ * note that exhausing iteration is assumed - otherwise *saveptr
+ * is not being freed!
*/
-static char *read_hdd_val(const char *line)
+static int read_hdd_val(const char *line, char **dev, short *val, char *unit,
+ char **saveptr)
{
- static char line_s[512] = "\0";
+ char *line_s, *cval, *endptr;
static char *p = 0;
- char *dev, *val, unit;
- char *ret = NULL;
if (line) {
- if (!snprintf(line_s, 512, "%s", line)) return ret;
- p = line_s;
+ *saveptr = strdup(line);
+ p = *saveptr;
}
- if (!(*line_s) || !p)
- return ret;
+ line_s = *saveptr;
+
+again:
+ if(!*p)
+ goto out_fail;
/* read the device */
- dev = ++p;
+ *dev = ++p;
if (!(p = strchr(p, line_s[0])))
- return ret;
+ goto out_fail;
*(p++) = '\0';
/* jump over the devname */
if (!(p = strchr(p, line_s[0])))
- return ret;
+ goto out_fail;
/* read the value */
- val = ++p;
+ cval = ++p;
if (!(p = strchr(p, line_s[0])))
- return ret;
+ goto out_fail;
*(p++) = '\0';
- unit = *(p++);
- /* preset p for next call */
- p = strchr(p + 1, line_s[0]);
+ *unit = *(p++);
+ *val = strtol(cval, &endptr, 10);
+ if (*endptr) {
+ if (!(p = strchr(p, line_s[0])))
+ goto out_fail;
- if (dev && *dev && val && *val) {
- asprintf(&ret, "%s%c%s", dev, unit, val);
+ p++;
+ goto again;
}
- return ret;
+
+ /* preset p for next call */
+ p++;
+
+ return 0;
+out_fail:
+ free(*saveptr);
+ return 1;
}
-/* returns <unit><val> or NULL on error or N/A */
-char *get_hddtemp_info(char *dev, char *hostaddr, int port)
-{
- int sockfd = 0;
- struct hostent he, *he_res = 0;
- int he_errno;
- char hostbuff[2048];
- struct sockaddr_in addr;
- struct timeval tv;
- fd_set rfds;
- int len, i;
- char *p, *r = NULL;
-
- if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
- perror("socket");
- goto GET_OUT;
- }
+int update_hddtemp(void) {
+ char *data, *dev, unit, *saveptr;
+ short val;
+ static double last_hddtemp_update = 0.0;
-#ifdef HAVE_GETHOSTBYNAME_R
- if (gethostbyname_r(hostaddr, &he, hostbuff,
- sizeof(hostbuff), &he_res, &he_errno)) {
- ERR("hddtemp gethostbyname_r: %s", hstrerror(h_errno));
-#else /* HAVE_GETHOSTBYNAME_R */
- if (!(he_res = gethostbyname(hostaddr))) {
- perror("gethostbyname()");
-#endif /* HAVE_GETHOSTBYNAME_R */
- goto GET_OUT;
- }
+ /* limit tcp connection overhead */
+ if (current_update_time - last_hddtemp_update < 5)
+ return 0;
+ last_hddtemp_update = current_update_time;
- addr.sin_family = AF_INET;
- addr.sin_port = htons(port);
- addr.sin_addr = *((struct in_addr *) he_res->h_addr);
- memset(&(addr.sin_zero), 0, 8);
+ free_hddtemp_info();
- if (connect(sockfd, (struct sockaddr *) &addr,
- sizeof(struct sockaddr)) == -1) {
- perror("connect");
- goto GET_OUT;
- }
+ if (!(data = fetch_hddtemp_output()))
+ return 0;
- FD_ZERO(&rfds);
- FD_SET(sockfd, &rfds);
-
- /* We're going to wait up to a half second to see whether there's any
- * data available. Polling with timeout set to 0 doesn't seem to work
- * with hddtemp.
- */
- tv.tv_sec = 0;
- tv.tv_usec = 500000;
-
- i = select(sockfd + 1, &rfds, NULL, NULL, &tv);
- if (i == -1) { /* select() failed */
- if (errno == EINTR) {
- /* silently ignore interrupted system call */
- goto GET_OUT;
- } else {
- perror("select");
- }
- } else if (i == 0) { /* select() timeouted */
- ERR("hddtemp had nothing for us");
- goto GET_OUT;
+ if (read_hdd_val(data, &dev, &val, &unit, &saveptr)) {
+ free(data);
+ return 0;
}
-
- p = buf;
- len = 0;
do {
- i = recv(sockfd, p, BUFLEN - (p - buf), 0);
- if (i < 0) {
- perror("recv");
- break;
- }
- len += i;
- p += i;
- } while (i > 0 && p < buf + BUFLEN - 1);
+ add_hddtemp_info(dev, val, unit);
+ } while (!read_hdd_val(NULL, &dev, &val, &unit, &saveptr));
+ free(data);
+ return 0;
+}
- if (len < 2) {
- ERR("hddtemp returned nada");
- goto GET_OUT;
+void free_hddtemp(void)
+{
+ free_hddtemp_info();
+ if (hddtemp_host) {
+ free(hddtemp_host);
+ hddtemp_host = NULL;
}
+ if (hddtemp_port) {
+ free(hddtemp_port);
+ hddtemp_port = NULL;
+ }
+}
- buf[len] = 0;
-
- if ((p = read_hdd_val(buf)) == NULL)
- goto GET_OUT;
- do {
- if (!strncmp(dev, p, strlen(dev)))
- asprintf(&r, "%s", p + strlen(dev));
- free(p);
- } while(!r && (p = read_hdd_val(NULL)) != NULL);
+int get_hddtemp_info(const char *dev, short *val, char *unit)
+{
+ struct hdd_info *hdi = hdd_info_head.next;
-GET_OUT:
- close(sockfd);
- return r;
+ /* if no dev is given, just use hdd_info_head->next */
+ while(dev && hdi) {
+ if (!strcmp(dev, hdi->dev))
+ break;
+ hdi = hdi->next;
+ }
+ if (!hdi)
+ return 1;
+
+ *val = hdi->temp;
+ *unit = hdi->unit;
+ return 0;
}
projects / monky / blobdiff