Match only /dev/fw[0-9]* as firewire-core device files
Previously, /dev/fw* and hence files like /dev/fwmonitor were probed which may have bad effects if the client runs with access privileges. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
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parent
489981d4ae
commit
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14
src/fw.c
14
src/fw.c
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@ -9,6 +9,7 @@
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* details.
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*/
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#include <ctype.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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@ -107,6 +108,13 @@ default_bus_reset_handler(raw1394handle_t handle, unsigned int gen)
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return 0;
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}
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static int
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is_fw_device_name(char *name)
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{
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return strncmp(name, FW_DEVICE_PREFIX, strlen(FW_DEVICE_PREFIX)) == 0
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&& isdigit(name[strlen(FW_DEVICE_PREFIX)]);
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}
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static int
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scan_devices(fw_handle_t handle)
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{
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@ -132,8 +140,7 @@ scan_devices(fw_handle_t handle)
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if (de == NULL)
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break;
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if (strncmp(de->d_name,
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FW_DEVICE_PREFIX, strlen(FW_DEVICE_PREFIX)) != 0)
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if (!is_fw_device_name(de->d_name))
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continue;
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snprintf(filename, sizeof filename, FW_DEVICE_DIR "/%s", de->d_name);
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@ -327,8 +334,7 @@ handle_inotify(raw1394handle_t handle, struct epoll_closure *ec,
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len = read(fwhandle->inotify_fd, event, BUFFER_SIZE);
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if (!(event->mask & IN_CREATE))
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return -1;
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if (strncmp(event->name,
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FW_DEVICE_PREFIX, strlen(FW_DEVICE_PREFIX)) != 0)
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if (!is_fw_device_name(event->name))
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return 0;
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snprintf(filename, sizeof filename, FW_DEVICE_DIR "/%s", event->name);
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fd = open(filename, O_RDWR);
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