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celestrak : added robustness + comments.

This commit is contained in:
euldulle 2025-05-27 11:48:45 +00:00
parent 116ae9105c
commit 305f0b0114
1 changed files with 21 additions and 5 deletions
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26
GUI/xephem/webdbmenu.c
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@ -470,13 +470,29 @@ char *url;
}
/* create local file */
if (strstr (url+ltransport, "celestrak.org/NORAD/elements")){
group=strstr (url+ltransport,"GROUP=")+6;
ampersand=strstr (group,"&");
snprintf(filename, 255, "%s/%.*s.edb", getPrivateDir(), (int)(ampersand-group), group);
if (strstr (url+ltransport, "celestrak.org/NORAD/elements")){
/* managing celestrak new URL format
* https://celestrak.org/NORAD/documentation/gp-data-formats.php
*
* the code below looks for the GROUP= argument in the URL to infer
* the destination filename */
/* fallback filename if no GROUP name found : */
snprintf(filename, 255, "%s/default-celestrak-download.edb", getPrivateDir());
/* look for GROUP= arg in url : */
group=strstr (url+ltransport,"GROUP=")+6;
if (group != NULL){ /* if we find a GROUP= name */
ampersand=strstr (group,"&"); /* look for a potential ampersand separating args in the url */
if (ampersand==NULL){ /* if no ampersand, lets assume group is the only argument in the url */
snprintf(filename, 255, "%s/%s.edb", getPrivateDir(), group);
}
else{
snprintf(filename, 255, "%s/%.*s.edb", getPrivateDir(), (int)(ampersand-group), group);
}
}
}
else{
slash = strrchr (url+ltransport, '/');
slash = strrchr (url+ltransport, '/');
sprintf (filename, "%s/%.*sedb", getPrivateDir(), (int)(dot-slash), slash+1);
}