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General refactor.

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This commit is contained in:
Natalia Portillo
2019-10-19 18:30:45 +01:00
parent 4e9a16f404
commit 78d23fce19
20 changed files with 905 additions and 912 deletions
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126
linux/usb.c
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@@ -23,114 +23,114 @@
#include <sys/stat.h>
#include <unistd.h>
uint8_t linux_get_usb_data(const char* devicePath,
uint16_t* descLen,
char* descriptors,
uint16_t* idVendor,
uint16_t* idProduct,
char* manufacturer,
char* product,
char* serial)
uint8_t LinuxGetUsbData(const char* device_path,
uint16_t* desc_len,
char* descriptors,
uint16_t* id_vendor,
uint16_t* id_product,
char* manufacturer,
char* product,
char* serial)
{
char* devPath;
char tmpPath[4096];
char resolvedLink[4096];
char* dev_path;
char tmp_path[4096];
char resolved_link[4096];
struct stat sb;
ssize_t len;
char* rchr;
int found = 1;
FILE* file;
*descLen = 0;
*idVendor = 0;
*idProduct = 0;
memset(tmpPath, 0, 4096);
memset(resolvedLink, 0, 4096);
*desc_len = 0;
*id_vendor = 0;
*id_product = 0;
memset(tmp_path, 0, 4096);
memset(resolved_link, 0, 4096);
if(strncmp(devicePath, "/dev/sd", 7) != 0 && strncmp(devicePath, "/dev/sr", 7) != 0 &&
strncmp(devicePath, "/dev/st", 7) != 0)
if(strncmp(device_path, "/dev/sd", 7) != 0 && strncmp(device_path, "/dev/sr", 7) != 0 &&
strncmp(device_path, "/dev/st", 7) != 0)
return 0;
devPath = (char*)devicePath + 5;
dev_path = (char*)device_path + 5;
snprintf(tmpPath, 4096, "/sys/block/%s", devPath);
snprintf(tmp_path, 4096, "/sys/block/%s", dev_path);
if(stat(tmpPath, &sb) != 0 || !S_ISDIR(sb.st_mode)) { return 0; }
if(stat(tmp_path, &sb) != 0 || !S_ISDIR(sb.st_mode)) { return 0; }
len = readlink(tmpPath, resolvedLink, 4096);
len = readlink(tmp_path, resolved_link, 4096);
if(len == 0) return 0;
memset(tmpPath, 0, 4096);
snprintf(tmpPath, 4096, "/sys%s", resolvedLink + 2);
memcpy(resolvedLink, tmpPath, 4096);
memset(tmp_path, 0, 4096);
snprintf(tmp_path, 4096, "/sys%s", resolved_link + 2);
memcpy(resolved_link, tmp_path, 4096);
while(strstr(resolvedLink, "usb") != NULL)
while(strstr(resolved_link, "usb") != NULL)
{
found = 1;
rchr = strrchr(resolvedLink, '/');
rchr = strrchr(resolved_link, '/');
if(rchr == NULL) break;
*rchr = '\0';
if(strlen(resolvedLink) == 0) break;
if(strlen(resolved_link) == 0) break;
snprintf(tmpPath, 4096, "%s/descriptors", resolvedLink);
if(access(tmpPath, R_OK) != 0) found = 0;
memset(tmpPath, 0, 4096);
snprintf(tmp_path, 4096, "%s/descriptors", resolved_link);
if(access(tmp_path, R_OK) != 0) found = 0;
memset(tmp_path, 0, 4096);
snprintf(tmpPath, 4096, "%s/idProduct", resolvedLink);
if(access(tmpPath, R_OK) != 0) found = 0;
memset(tmpPath, 0, 4096);
snprintf(tmp_path, 4096, "%s/idProduct", resolved_link);
if(access(tmp_path, R_OK) != 0) found = 0;
memset(tmp_path, 0, 4096);
snprintf(tmpPath, 4096, "%s/idVendor", resolvedLink);
if(access(tmpPath, R_OK) != 0) found = 0;
memset(tmpPath, 0, 4096);
snprintf(tmp_path, 4096, "%s/idVendor", resolved_link);
if(access(tmp_path, R_OK) != 0) found = 0;
memset(tmp_path, 0, 4096);
if(!found) continue;
snprintf(tmpPath, 4096, "%s/descriptors", resolvedLink);
file = fopen(tmpPath, "r");
snprintf(tmp_path, 4096, "%s/descriptors", resolved_link);
file = fopen(tmp_path, "r");
if(file == NULL) break;
*descLen = (uint16_t)fread(descriptors, 4096, 1, file);
*desc_len = (uint16_t)fread(descriptors, 4096, 1, file);
fclose(file);
memset(tmpPath, 0, 4096);
snprintf(tmpPath, 4096, "%s/idProduct", resolvedLink);
memset(tmp_path, 0, 4096);
snprintf(tmp_path, 4096, "%s/idProduct", resolved_link);
if(access(tmpPath, R_OK) == 0)
if(access(tmp_path, R_OK) == 0)
{
file = fopen(tmpPath, "r");
file = fopen(tmp_path, "r");
if(file != NULL)
{
fscanf(file, "%4hx", idProduct);
fscanf(file, "%4hx", id_product);
fclose(file);
}
}
memset(tmpPath, 0, 4096);
snprintf(tmpPath, 4096, "%s/idVendor", resolvedLink);
memset(tmp_path, 0, 4096);
snprintf(tmp_path, 4096, "%s/idVendor", resolved_link);
if(access(tmpPath, R_OK) == 0)
if(access(tmp_path, R_OK) == 0)
{
file = fopen(tmpPath, "r");
file = fopen(tmp_path, "r");
if(file != NULL)
{
fscanf(file, "%4hx", idVendor);
fscanf(file, "%4hx", id_vendor);
fclose(file);
}
}
memset(tmpPath, 0, 4096);
snprintf(tmpPath, 4096, "%s/manufacturer", resolvedLink);
memset(tmp_path, 0, 4096);
snprintf(tmp_path, 4096, "%s/manufacturer", resolved_link);
if(access(tmpPath, R_OK) == 0)
if(access(tmp_path, R_OK) == 0)
{
file = fopen(tmpPath, "r");
file = fopen(tmp_path, "r");
if(file != NULL)
{
fread(manufacturer, 256, 1, file);
@@ -138,12 +138,12 @@ uint8_t linux_get_usb_data(const char* devicePath,
}
}
memset(tmpPath, 0, 4096);
snprintf(tmpPath, 4096, "%s/product", resolvedLink);
memset(tmp_path, 0, 4096);
snprintf(tmp_path, 4096, "%s/product", resolved_link);
if(access(tmpPath, R_OK) == 0)
if(access(tmp_path, R_OK) == 0)
{
file = fopen(tmpPath, "r");
file = fopen(tmp_path, "r");
if(file != NULL)
{
fread(product, 256, 1, file);
@@ -151,12 +151,12 @@ uint8_t linux_get_usb_data(const char* devicePath,
}
}
memset(tmpPath, 0, 4096);
snprintf(tmpPath, 4096, "%s/serial", resolvedLink);
memset(tmp_path, 0, 4096);
snprintf(tmp_path, 4096, "%s/serial", resolved_link);
if(access(tmpPath, R_OK) == 0)
if(access(tmp_path, R_OK) == 0)
{
file = fopen(tmpPath, "r");
file = fopen(tmp_path, "r");
if(file != NULL)
{
fread(serial, 256, 1, file);
@@ -167,5 +167,5 @@ uint8_t linux_get_usb_data(const char* devicePath,
break;
}
return *descLen != 0;
return *desc_len != 0;
}